//DD Tab Menu- Last updated April 27th, 07: http://www.dynamicdrive.com
//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"
    }
	targetitem.className="current"
	if (typeof targetitem.hasSubContent!="undefined")
		document.getElementById(targetitem.getAttribute("rel")).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 menuitems=document.getElementById(tabid).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
			    if (ddtabmenu.disabletablinks)
				    menuitems[x].onclick=function(){return false}
		    }
		    else //for items without a submenu, add onMouseout effect
			    menuitems[x].onmouseout=function(){this.className=""}
    			
		    //menuitems[x].onmouseover=function(){ddtabmenu.showsubmenu(tabid, this)}
		    menuitems[x].onclick=function(){ddtabmenu.showsubmenu(tabid, this)}
    		
		    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])
	    }
    }
}