Internet Explorer, Mozilla and its variants, and possibly other browsers support w3c accessibility guidelines, at least to some degree.
The a element can receive focus, so it can have an
accesskey and a tabindex.
To make tab degrade to a true anchor, set the href to the id of its content div.
<a href="#contentGame" accesskey="g" tabindex="1" id="tabGame" class="tab tabActive"><u>G</u>ame</a>
You'll have to use focus for TabParams.eventType.
TabParams = {
...
eventType : "focus".
...
};
Set the eventType for an individual TabSystem by
calling onload: TabSystem.list[sTabSystemId].setEventType(sType)
If the tabsystem element had the id "TabSystem1", you would use:
function init() {
tabInit();
TabSystem.list["TabSystem1"].setEventType("focus");
}
Next in this tutorial: Tab navigation: Using hash marks in the location; calling switchTabs