var mastertabvar=new Object()
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"
}

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 changeImages(setme){
	if(setme == "vr" || setme == "vacationrentals") {
		document.getElementById("vr").style.backgroundImage="url('http://www.sdsre.com/template/SunsetSanDiegoRE/images/btn_vr_down.jpg')"
	}
	if(setme == "res" || setme == "realestate") {
		document.getElementById("res").style.backgroundImage="url('http://www.sdsre.com/template/SunsetSanDiegoRE/images/btn_res_down.jpg')"
	}
	if(setme == "ltr" || setme == "longtermrentals") {
		document.getElementById("ltr").style.backgroundImage="url('http://www.sdsre.com/template/SunsetSanDiegoRE/images/btn_ltr_down.jpg')"
	}
	if(setme == "sr" || setme == "studentrentals") {
		document.getElementById("sr").style.backgroundImage="url('http://www.sdsre.com/template/SunsetSanDiegoRE/images/btn_sr_down.jpg')"
	}
}

function initalizetab(tabid,startmenu){
	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].onclick=function(){
				showsubmenu(this.parentNode.getAttribute("rev"), this.parentNode.getAttribute("rel"))
				changeImages(this.getAttribute("id"));
			}
		}
	}
	showsubmenu(tabid, startmenu)
	changeImages(startmenu);
}