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

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.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 = degree/100;
	else if (mastertabvar.browserdetect == "ie")
		submenuobject.filters.alpha.opacity = degree;
}


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

function daimo(i, rev, rel) {
	if (over == i) showsubmenu(rev, rel);
}

function initalizetab(tabid) {
	mastertabvar[tabid] = new Array();
	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].onmouseout = function(){
				over = 'null';
			}
/*			menuitems[i].getElementsByTagName("a")[0].onmouseover = function(){ */
			menuitems[i].getElementsByTagName("a")[0].onclick = function(){
					if(over == 'null') over = this.parentNode.getAttribute('rel');
					var rev = this.parentNode.getAttribute('rev');
					var rel = this.parentNode.getAttribute('rel');
					
					setTimeout("daimo('"+this.parentNode.getAttribute('rel')+"', '"+rev+"','"+rel+"')", 300)
					/*showsubmenu(this.parentNode.getAttribute('rev'), this.parentNode.getAttribute('rel'))*/
			}
		}
	}
	over = "null";
}