//DD Tab Menu- Last updated April 27th, 07: http://www.dynamicdrive.com
//Custom mod: Dec 14th, 07- Changed sub menu reveal from onmouseover to onclick
//Only 1 configuration variable below

var ddtabmenu={
	disabletablinks: false, ////Disable hyperlinks in 1st level tabs with sub contents (true or false)?
	currentpageurl: window.location.href.replace("http://"+window.location.hostname, "").replace(/^\//, ""), //get current page url (minus hostname, ie: http://www.dynamicdrive.com/)

definemenu:function(tabid, dselected){
	this[tabid+"-menuitems"]=null
	this.addEvent(window, function(){ddtabmenu.init(tabid, dselected)}, "load")
},

showsubmenu:function(tabid, targetitem){
	var menuitems=this[tabid+"-menuitems"]
 for (i=0; i<menuitems.length; i++){
		menuitems[i].className=""
		if (typeof menuitems[i].hasSubContent!="undefined") {
			document.getElementById(menuitems[i].getAttribute("rel")).style.display="none";
			if (document.getElementById(menuitems[i].getAttribute("tzt"))!=null) {
			  document.getElementById(menuitems[i].getAttribute("tzt")).style.display="none";
			}
		}
	}
	targetitem.className="current"
	if (typeof targetitem.hasSubContent!="undefined") {
		document.getElementById(targetitem.getAttribute("rel")).style.display="block";
		if (document.getElementById(targetitem.getAttribute("tzt"))!=null) {
			  document.getElementById(targetitem.getAttribute("tzt")).style.display="block";
		}
	}
},

isSelected:function(menuurl){
	var menuurl=menuurl.replace("http://"+menuurl.hostname, "").replace(/^\//, "")
	return (ddtabmenu.currentpageurl==menuurl)
},

addEvent:function(target, functionref, tasktype){ //assign a function to execute to an event handler (ie: onunload)
	var tasktype=(window.addEventListener)? tasktype : "on"+tasktype
	if (target.addEventListener)
		target.addEventListener(tasktype, functionref, false)
	else if (target.attachEvent)
		target.attachEvent(tasktype, functionref)
},

init:function(tabid, dselected){
    var el = document.getElementById(tabid);
    if (el!=null) {
		var menuitems=el.getElementsByTagName("a")
		this[tabid+"-menuitems"]=menuitems
		for (var x=0; x<menuitems.length; x++){
			if (menuitems[x].getAttribute("rel")){
				this[tabid+"-menuitems"][x].hasSubContent=true
				menuitems[x].onmouseover=function(){ddtabmenu.showsubmenu(tabid, this); return false}
	
			}
			else //for items without a submenu, add onMouseout effect
				menuitems[x].onmouseout=function(){this.className=""}
			if (dselected=="auto" && typeof setalready=="undefined" && this.isSelected(menuitems[x].href)){
				ddtabmenu.showsubmenu(tabid, menuitems[x])
				var setalready=true
			}
			else if (parseInt(dselected)==x)
				ddtabmenu.showsubmenu(tabid, menuitems[x])
		}
	}
}
}