//Set tab to intially be selected when page loads:
//[which tab (1=first tab), ID of tab content to display]:
var initialtab=[1, "sc1"]

function cascadedstyle(el, cssproperty, csspropertyNS){
	if (el.currentStyle)
		return el.currentStyle[cssproperty]
	else if (window.getComputedStyle){
		var elstyle=window.getComputedStyle(el, "")
		return elstyle.getPropertyValue(csspropertyNS)
	}
}

var previoustab=""

function expandcontent(cid, aobject){
	if (document.getElementById){
		highlighttab(aobject)
		detectSourceindex(aobject)
	if (previoustab!="")
		document.getElementById(previoustab).style.display="none"
		document.getElementById(cid).style.display="block"
		previoustab=cid
	if (aobject.blur)
		aobject.blur()
		return false
	}
	else
		return true
}

function highlighttab(aobject){
	if (typeof tabobjlinks=="undefined")
		collecttablinks()
	for (i=0; i<tabobjlinks.length; i++)
		tabobjlinks[i].style.backgroundColor=initTabcolor

	var themecolor=aobject.getAttribute("theme")? aobject.getAttribute("theme") : initTabpostcolor
	aobject.style.backgroundColor=document.getElementById("tabcontentcontainer").style.backgroundColor=themecolor
}

function collecttablinks(){
	var tabobj=document.getElementById("tablist")
	tabobjlinks=tabobj.getElementsByTagName("A")
}

function detectSourceindex(aobject){
	for (i=0; i<tabobjlinks.length; i++){
		if (aobject==tabobjlinks[i]){
			tabsourceindex=i //source index of tab bar relative to other tabs
			break
		}
	}
}

function do_onload(){
	var cookiename=(typeof persisttype!="undefined" && persisttype=="sitewide")? "tabcontent" : window.location.pathname
	var cookiecheck=window.get_cookie && get_cookie(cookiename).indexOf("|")!=-1
		collecttablinks()
		initTabcolor=cascadedstyle(tabobjlinks[1], "backgroundColor", "background-color")
		initTabpostcolor=cascadedstyle(tabobjlinks[0], "backgroundColor", "background-color")
	if (typeof enablepersistence!="undefined" && enablepersistence && cookiecheck){
		var cookieparse=get_cookie(cookiename).split("|")
		var whichtab=cookieparse[0]
		var tabcontentid=cookieparse[1]
		expandcontent(tabcontentid, tabobjlinks[whichtab])
	}
	else
		expandcontent(initialtab[1], tabobjlinks[initialtab[0]-1])
}

if (window.addEventListener)
	window.addEventListener("load", do_onload, false)
else if (window.attachEvent)
	window.attachEvent("onload", do_onload)
else if (document.getElementById)
	window.onload=do_onload