var mastertabvar=new Object();
mastertabvar.baseopacity=0;
mastertabvar.browserdetect="";
var t=null;

function showsubmenu(masterid, id){
	if (typeof highlighting!="undefined")
		clearInterval(highlighting);
		submenuobject=document.getElementById(id);
		mastertabvar.browserdetect=submenuobject.filters? "ie" : typeof submenuobject.style.MozOpacity=="string"? "mozilla" : "";
		hidesubmenus(mastertabvar[masterid]);
		submenuobject.style.visibility="visible";
		submenuobject.style.display="block";
		instantset(mastertabvar.baseopacity);
		highlighting=setInterval("gradualfade(submenuobject)",50);
}

function hidesubmenus(submenuarray){
	for (var i=0; i<submenuarray.length; i++)
		document.getElementById(submenuarray[i]).style.display="none";
}

function instantset(degree){
	if (mastertabvar.browserdetect=="mozilla"){
		submenuobject.style.MozOpacity=1;
	}
	else if (mastertabvar.browserdetect=="ie"){
		submenuobject.filters.alpha.opacity=100;
	}
}

function gradualfade(cur2){
	if (mastertabvar.browserdetect=="mozilla" && cur2.style.MozOpacity<1)
		cur2.style.MozOpacity=Math.min(parseFloat(cur2.style.MozOpacity)+0.1, 0.99);
		//clearInterval(highlighting);
	else if (mastertabvar.browserdetect=="ie" && cur2.filters.alpha.opacity<100)
		cur2.filters.alpha.opacity+=10;
		//clearInterval(highlighting);
	else if (typeof highlighting!="undefined") //fading animation over
		clearInterval(highlighting);
}

// Function to reset submenu items
function menuReset(){
	//alert("resetting menus");
	var allSubMenuItems = $$('div.submenustyle');
	for(var i=0;i<allSubMenuItems.length;i++){
		$$('div.submenustyle')[i].style.visibility="hidden";
		$$('div.submenustyle')[i].style.display="none";
	}
	//debugger;
	initalizetab("maintab");
}

// Function to set timer
function resetMenuItems() {
	//alert("setting timeout to 4sec.");
	clearTimeout(t);
	t=setTimeout('menuReset()',1000);
}

function initalizetab(tabid){
	mastertabvar[tabid]=new Array();
	var menuitems=document.getElementById(tabid).getElementsByTagName("li");
		for (var i=0; i<menuitems.length; i++){
			if (menuitems[i].getAttribute("rel")){
				menuitems[i].setAttribute("rev", tabid) //associate this submenu with main tab
				mastertabvar[tabid][mastertabvar[tabid].length]=menuitems[i].getAttribute("rel") //store ids of submenus of tab menu
				if (menuitems[i].className=="selected")
					showsubmenu(tabid, menuitems[i].getAttribute("rel"));
					menuitems[i].getElementsByTagName("a")[0].onmouseover=function(){
						showsubmenu(this.parentNode.getAttribute("rev"), this.parentNode.getAttribute("rel"));
						clearTimeout(t);
			}
			menuitems[i].getElementsByTagName("a")[0].onmouseout=function(){
				if (this.addEventListener){
	  				this.addEventListener('mouseout', resetMenuItems, true);
					//alert("mouseout listener added");
					//debugger;
				} else if (this.attachEvent){
	  				this.attachEvent('onmouseout', resetMenuItems);
					//alert("onmouseout event attached");
				}
			}
		}
	}
}