ddtabmenu.definemenu("ddtabs", 0) //initialize Tab Menu #1 with 1st tab selected


//DD Tab Menu- Script rewritten April 27th, 07: http://www.dynamicdrive.com
//**Updated Feb 23rd, 08): Adds ability for menu to revert back to default selected tab when mouse moves out of menu

//Only 2 configuration variables below:

var ddtabmenu={
    disabletablinks: false, //Disable hyperlinks in 1st level tabs with sub contents (true or false)?
    snap2original: [true, 300], //Should tab revert back to default selected when mouse moves out of menu? ([true/false, delay_millisec]

    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[tabid+"-dselected"]=-1
    this.addEvent(window, function(){ddtabmenu.init(tabid, dselected)}, "load")
},

showsubmenu:function(tabid, targetitem){
    var menuitems=this[tabid+"-menuitems"]
    this.clearrevert2default(tabid)
 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)
},

isContained:function(m, e){
    var e=window.event || e
    var c=e.relatedTarget || ((e.type=="mouseover")? e.fromElement : e.toElement)
    while (c && c!=m)try {c=c.parentNode} catch(e){c=m}
    if (c==m)
        return true
    else
        return false
},

revert2default:function(outobj, tabid, e){
    if (!ddtabmenu.isContained(outobj, tabid, e)){
        window["hidetimer_"+tabid]=setTimeout(function(){
            ddtabmenu.showsubmenu(tabid, ddtabmenu[tabid+"-dselected"])
        }, ddtabmenu.snap2original[1])
    }
},

clearrevert2default:function(tabid){
 if (typeof window["hidetimer_"+tabid]!="undefined")
        clearTimeout(window["hidetimer_"+tabid])
},

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}
            if (ddtabmenu.snap2original[0]==true){
                var submenu=document.getElementById(menuitems[x].getAttribute("rel"))
                menuitems[x].onmouseout=function(e){ddtabmenu.revert2default(submenu, tabid, e)}
                submenu.onmouseover=function(){ddtabmenu.clearrevert2default(tabid)}
                submenu.onmouseout=function(e){ddtabmenu.revert2default(this, tabid, e)}
            }
        }
        else //for items without a submenu, add onMouseout effect
            menuitems[x].onmouseout=function(e){this.className=""; if (ddtabmenu.snap2original[0]==true) ddtabmenu.revert2default(this, tabid, e)}
        menuitems[x].onmouseover=function(){ddtabmenu.showsubmenu(tabid, this)}
        if (dselected=="auto" && typeof setalready=="undefined" && this.isSelected(menuitems[x].href)){
            ddtabmenu.showsubmenu(tabid, menuitems[x])
            this[tabid+"-dselected"]=menuitems[x]
            var setalready=true
        }
        else if (parseInt(dselected)==x){
            ddtabmenu.showsubmenu(tabid, menuitems[x])
            this[tabid+"-dselected"]=menuitems[x]
        }
    }
}
}