mirror of
https://github.com/e107inc/e107.git
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588 lines
14 KiB
JavaScript
588 lines
14 KiB
JavaScript
//<![CDATA[
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//*****************************************************************************
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// Do not remove this notice.
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//
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// Copyright 2000-2004 by Mike Hall.
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// See http://www.brainjar.com for terms of use.
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//*****************************************************************************
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//----------------------------------------------------------------------------
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// Code to determine the browser and version.
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//----------------------------------------------------------------------------
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function Browser() {
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var ua, s, i;
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this.isIE = false; // Internet Explorer
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this.isOP = false; // Opera
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this.isNS = false; // Netscape
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this.version = null;
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ua = navigator.userAgent;
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s = "Opera";
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if ((i = ua.indexOf(s)) >= 0) {
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this.isOP = true;
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this.version = parseFloat(ua.substr(i + s.length));
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return;
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}
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s = "Netscape6/";
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if ((i = ua.indexOf(s)) >= 0) {
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this.isNS = true;
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this.version = parseFloat(ua.substr(i + s.length));
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return;
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}
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// Treat any other "Gecko" browser as Netscape 6.1.
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s = "Gecko";
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if ((i = ua.indexOf(s)) >= 0) {
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this.isNS = true;
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this.version = 6.1;
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return;
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}
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s = "MSIE";
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if ((i = ua.indexOf(s))) {
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this.isIE = true;
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this.version = parseFloat(ua.substr(i + s.length));
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return;
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}
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}
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var browser = new Browser();
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//----------------------------------------------------------------------------
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// Code for handling the menu bar and active button.
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//----------------------------------------------------------------------------
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var activeButton = null;
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/* [MODIFIED] This code commented out, not needed for activate/deactivate
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on mouseover.
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// Capture mouse clicks on the page so any active button can be
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// deactivated.
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if (browser.isIE)
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document.onmousedown = pageMousedown;
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else
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document.addEventListener("mousedown", pageMousedown, true);
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function pageMousedown(event) {
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var el;
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// If there is no active button, exit.
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if (activeButton == null)
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return;
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// Find the element that was clicked on.
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if (browser.isIE)
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el = window.event.srcElement;
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else
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el = (event.target.tagName ? event.target : event.target.parentNode);
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// If the active button was clicked on, exit.
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if (el == activeButton)
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return;
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// If the element is not part of a menu, reset and clear the active
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// button.
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if (getContainerWith(el, "DIV", "menu") == null) {
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resetButton(activeButton);
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activeButton = null;
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}
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}
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[END MODIFIED] */
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function buttonClick(event, menuId) {
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var button;
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// Get the target button element.
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if (browser.isIE)
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button = window.event.srcElement;
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else
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button = event.currentTarget;
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// Blur focus from the link to remove that annoying outline.
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button.blur();
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// Associate the named menu to this button if not already done.
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// Additionally, initialize menu display.
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if (button.menu == null) {
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button.menu = document.getElementById(menuId);
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if (button.menu.isInitialized == null)
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menuInit(button.menu);
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}
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// [MODIFIED] Added for activate/deactivate on mouseover.
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// Set mouseout event handler for the button, if not already done.
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if (button.onmouseout == null)
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button.onmouseout = buttonOrMenuMouseout;
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// Exit if this button is the currently active one.
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if (button == activeButton)
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return false;
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// [END MODIFIED]
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// Reset the currently active button, if any.
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if (activeButton != null)
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resetButton(activeButton);
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// Activate this button, unless it was the currently active one.
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if (button != activeButton) {
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depressButton(button);
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activeButton = button;
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}
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else
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activeButton = null;
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return false;
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}
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function buttonMouseover(event, menuId) {
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var button;
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// [MODIFIED] Added for activate/deactivate on mouseover.
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// Activates this button's menu if no other is currently active.
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if (activeButton == null) {
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buttonClick(event, menuId);
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return;
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}
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// [END MODIFIED]
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// Find the target button element.
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if (browser.isIE)
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button = window.event.srcElement;
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else
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button = event.currentTarget;
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// If any other button menu is active, make this one active instead.
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if (activeButton != null && activeButton != button)
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buttonClick(event, menuId);
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}
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function depressButton(button) {
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var x, y;
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// Update the button's style class to make it look like it's
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// depressed.
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button.className += " menuButtonActive";
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// [MODIFIED] Added for activate/deactivate on mouseover.
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// Set mouseout event handler for the button, if not already done.
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if (button.onmouseout == null)
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button.onmouseout = buttonOrMenuMouseout;
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if (button.menu.onmouseout == null)
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button.menu.onmouseout = buttonOrMenuMouseout;
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// [END MODIFIED]
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// Position the associated drop down menu under the button and
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// show it.
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x = getPageOffsetLeft(button);
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y = getPageOffsetTop(button) + button.offsetHeight;
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// For IE, adjust position.
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if (browser.isIE) {
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x += button.offsetParent.clientLeft;
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y += button.offsetParent.clientTop - 1;
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}
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button.menu.style.left = x + "px";
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button.menu.style.top = y + "px";
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button.menu.style.visibility = "visible";
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// For IE; size, position and show the menu's IFRAME as well.
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if (button.menu.iframeEl != null)
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{
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button.menu.iframeEl.style.left = button.menu.style.left;
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button.menu.iframeEl.style.top = button.menu.style.top;
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button.menu.iframeEl.style.width = button.menu.offsetWidth + "px";
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button.menu.iframeEl.style.height = button.menu.offsetHeight + "px";
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button.menu.iframeEl.style.display = "";
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}
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}
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function resetButton(button) {
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// Restore the button's style class.
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removeClassName(button, "menuButtonActive");
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// Hide the button's menu, first closing any sub menus.
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if (button.menu != null) {
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closeSubMenu(button.menu);
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button.menu.style.visibility = "hidden";
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// For IE, hide menu's IFRAME as well.
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if (button.menu.iframeEl != null)
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button.menu.iframeEl.style.display = "none";
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}
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}
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//----------------------------------------------------------------------------
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// Code to handle the menus and sub menus.
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//----------------------------------------------------------------------------
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function menuMouseover(event) {
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var menu;
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// Find the target menu element.
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if (browser.isIE)
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menu = getContainerWith(window.event.srcElement, "DIV", "menu");
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else
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menu = event.currentTarget;
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// Close any active sub menu.
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if (menu.activeItem != null)
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closeSubMenu(menu);
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}
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function menuItemMouseover(event, menuId) {
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var item, menu, x, y;
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// Find the target item element and its parent menu element.
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if (browser.isIE)
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item = getContainerWith(window.event.srcElement, "A", "menuItem");
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else
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item = event.currentTarget;
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menu = getContainerWith(item, "DIV", "menu");
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// Close any active sub menu and mark this one as active.
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if (menu.activeItem != null)
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closeSubMenu(menu);
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menu.activeItem = item;
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// Highlight the item element.
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item.className += " menuItemHighlight";
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// Initialize the sub menu, if not already done.
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if (item.subMenu == null) {
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item.subMenu = document.getElementById(menuId);
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if (item.subMenu.isInitialized == null)
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menuInit(item.subMenu);
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}
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// [MODIFIED] Added for activate/deactivate on mouseover.
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// Set mouseout event handler for the sub menu, if not already done.
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if (item.subMenu.onmouseout == null)
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item.subMenu.onmouseout = buttonOrMenuMouseout;
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// [END MODIFIED]
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// Get position for submenu based on the menu item.
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x = getPageOffsetLeft(item) + item.offsetWidth;
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y = getPageOffsetTop(item);
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// Adjust position to fit in view.
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var maxX, maxY;
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if (browser.isIE) {
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maxX = Math.max(document.documentElement.scrollLeft, document.body.scrollLeft) +
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(document.documentElement.clientWidth != 0 ? document.documentElement.clientWidth : document.body.clientWidth);
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maxY = Math.max(document.documentElement.scrollTop, document.body.scrollTop) +
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(document.documentElement.clientHeight != 0 ? document.documentElement.clientHeight : document.body.clientHeight);
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}
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if (browser.isOP) {
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maxX = document.documentElement.scrollLeft + window.innerWidth;
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maxY = document.documentElement.scrollTop + window.innerHeight;
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}
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if (browser.isNS) {
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maxX = window.scrollX + window.innerWidth;
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maxY = window.scrollY + window.innerHeight;
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}
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maxX -= item.subMenu.offsetWidth;
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maxY -= item.subMenu.offsetHeight;
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if (x > maxX)
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x = Math.max(0, x - item.offsetWidth - item.subMenu.offsetWidth
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+ (menu.offsetWidth - item.offsetWidth));
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y = Math.max(0, Math.min(y, maxY));
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// Position and show the sub menu.
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item.subMenu.style.left = x + "px";
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item.subMenu.style.top = y + "px";
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item.subMenu.style.visibility = "visible";
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// For IE; size, position and display the menu's IFRAME as well.
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if (item.subMenu.iframeEl != null)
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{
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item.subMenu.iframeEl.style.left = item.subMenu.style.left;
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item.subMenu.iframeEl.style.top = item.subMenu.style.top;
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item.subMenu.iframeEl.style.width = item.subMenu.offsetWidth + "px";
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item.subMenu.iframeEl.style.height = item.subMenu.offsetHeight + "px";
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item.subMenu.iframeEl.style.display = "";
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}
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// Stop the event from bubbling.
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if (browser.isIE)
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window.event.cancelBubble = true;
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else
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event.stopPropagation();
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}
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function closeSubMenu(menu) {
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if (menu == null || menu.activeItem == null)
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return;
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// Recursively close any sub menus.
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if (menu.activeItem.subMenu != null) {
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closeSubMenu(menu.activeItem.subMenu);
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menu.activeItem.subMenu.style.visibility = "hidden";
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// For IE, hide the sub menu's IFRAME as well.
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if (menu.activeItem.subMenu.iframeEl != null)
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menu.activeItem.subMenu.iframeEl.style.display = "none";
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menu.activeItem.subMenu = null;
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}
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// Deactivate the active menu item.
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removeClassName(menu.activeItem, "menuItemHighlight");
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menu.activeItem = null;
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}
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// [MODIFIED] Added for activate/deactivate on mouseover. Handler for mouseout
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// event on buttons and menus.
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function buttonOrMenuMouseout(event) {
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var el;
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// If there is no active button, exit.
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if (activeButton == null)
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return;
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// Find the element the mouse is moving to.
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if (browser.isIE)
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el = window.event.toElement;
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else if (event.relatedTarget != null)
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el = (event.relatedTarget.tagName ? event.relatedTarget : event.relatedTarget.parentNode);
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// If the element is not part of a menu, reset the active button.
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if (getContainerWith(el, "DIV", "menu") == null) {
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resetButton(activeButton);
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activeButton = null;
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}
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}
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// [END MODIFIED]
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//----------------------------------------------------------------------------
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// Code to initialize menus.
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//----------------------------------------------------------------------------
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function menuInit(menu) {
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var itemList, spanList;
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var textEl, arrowEl;
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var itemWidth;
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var w, dw;
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var i, j;
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// For IE, replace arrow characters.
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if (browser.isIE) {
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menu.style.lineHeight = "2.5ex";
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spanList = menu.getElementsByTagName("SPAN");
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for (i = 0; i < spanList.length; i++)
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if (hasClassName(spanList[i], "menuItemArrow")) {
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spanList[i].style.fontFamily = "Webdings";
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spanList[i].firstChild.nodeValue = "4";
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}
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}
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// Find the width of a menu item.
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itemList = menu.getElementsByTagName("A");
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if (itemList.length > 0)
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itemWidth = itemList[0].offsetWidth;
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else
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return;
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// For items with arrows, add padding to item text to make the
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// arrows flush right.
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for (i = 0; i < itemList.length; i++) {
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spanList = itemList[i].getElementsByTagName("SPAN");
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textEl = null;
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arrowEl = null;
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for (j = 0; j < spanList.length; j++) {
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if (hasClassName(spanList[j], "menuItemText"))
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textEl = spanList[j];
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if (hasClassName(spanList[j], "menuItemArrow"))
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arrowEl = spanList[j];
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}
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if (textEl != null && arrowEl != null) {
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textEl.style.paddingRight = (itemWidth
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- (textEl.offsetWidth + arrowEl.offsetWidth)) + "px";
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// For Opera, remove the negative right margin to fix a display bug.
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if (browser.isOP)
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arrowEl.style.marginRight = "0px";
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}
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}
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// Fix IE hover problem by setting an explicit width on first item of
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// the menu.
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if (browser.isIE) {
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w = itemList[0].offsetWidth;
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itemList[0].style.width = w + "px";
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dw = itemList[0].offsetWidth - w;
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w -= dw;
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itemList[0].style.width = w + "px";
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}
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// Fix the IE display problem (SELECT elements and other windowed controls
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// overlaying the menu) by adding an IFRAME under the menu.
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if (browser.isIE) {
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var iframeEl = document.createElement("iframe");
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iframeEl.frameBorder = 0;
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iframeEl.src = "#";
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iframeEl.style.display = "none";
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iframeEl.style.position = "absolute";
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iframeEl.style.filter = "progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)";
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menu.iframeEl = menu.parentNode.insertBefore(iframeEl, menu);
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}
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// Mark menu as initialized.
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menu.isInitialized = true;
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}
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//----------------------------------------------------------------------------
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// General utility functions.
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//----------------------------------------------------------------------------
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function getContainerWith(node, tagName, className) {
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// Starting with the given node, find the nearest containing element
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// with the specified tag name and style class.
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while (node != null) {
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if (node.tagName != null && node.tagName == tagName &&
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hasClassName(node, className))
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return node;
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node = node.parentNode;
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}
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return node;
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}
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function hasClassName(el, name) {
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var i, list;
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// Return true if the given element currently has the given class
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// name.
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list = el.className.split(" ");
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for (i = 0; i < list.length; i++)
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if (list[i] == name)
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return true;
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return false;
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}
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function removeClassName(el, name) {
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var i, curList, newList;
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if (el.className == null)
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return;
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// Remove the given class name from the element's className property.
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newList = new Array();
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curList = el.className.split(" ");
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for (i = 0; i < curList.length; i++)
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if (curList[i] != name)
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newList.push(curList[i]);
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el.className = newList.join(" ");
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}
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function getPageOffsetLeft(el) {
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var x;
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// Return the x coordinate of an element relative to the page.
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x = el.offsetLeft;
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if (el.offsetParent != null)
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x += getPageOffsetLeft(el.offsetParent);
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return x;
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}
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function getPageOffsetTop(el) {
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var y;
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// Return the x coordinate of an element relative to the page.
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y = el.offsetTop;
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if (el.offsetParent != null)
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y += getPageOffsetTop(el.offsetParent);
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return y;
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}
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//]]>
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