/*ie6 flicker fix*/
try {document.execCommand("BackgroundImageCache",false,true);} catch (e) {}
/*hover submenus*/
if (typeof(Prototype)!="undefined") {
	Event.observe(window,"load",function() {
		var toc=$("toc");
		var items=toc?toc.getElementsByTagName("td"):[];
		for (var i=0;i<items.length;i++) {
			items[i].onmouseover=function() {Element.addClassName(this,'hover');};
			items[i].onmouseout=function() {Element.removeClassName(this,'hover');};
		}
	});
}