Prevent style switcher from blocking the tab key. #49335

Tested under FF 3.0/3.5/Opera/Chrome on Linux



git-svn-id: file:///svn/phpbb/branches/phpBB-3_0_0@9994 89ea8834-ac86-4346-8a33-228a782c2dd0

phpBB/styles/prosilver/template/styleswitcher.js

@@ -1,6 +1,12 @@
 
-function fontsizeup()
+function fontsizeup(event)
 {
+	// Skip tabs
+	if (event && getKeyCode(event) == 9)
+	{
+		return true;
+	}
+
 	var active = getActiveStyleSheet();
 
 	switch (active)
@@ -29,11 +35,19 @@ function fontsizeup()
 			setActiveStyleSheet('A');
 		break;
 	}
+
+	return false;
 }
 
-function fontsizedown()
+function fontsizedown(event)
 {
-	active = getActiveStyleSheet();
+	// Skip tabs
+	if (event && getKeyCode(event) == 9)
+	{
+		return true;
+	}
+
+	var active = getActiveStyleSheet();
 
 	switch (active)
 	{
@@ -60,6 +74,24 @@ function fontsizedown()
 			setActiveStyleSheet('A--');
 		break;
 	}
+
+	return false;
+}
+
+function getKeyCode(event)
+{
+	// IE doesn't fire the onkeypress event for tabs
+	// Reference: http://www.quirksmode.org/js/keys.html
+
+	var code = (event.keyCode) ? event.keyCode : 0;
+
+	// Probably using FF
+	if (!code && event.charCode)
+	{
+		code = event.charCode;
+	}
+
+	return code;
 }
 
 function setActiveStyleSheet(title)