/***********************************************
* Tab Content script- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code
***********************************************/

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

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].className=''
	var themecolor=aobject.getAttribute("theme")? aobject.getAttribute("theme") : initTabpostcolor
	//aobject.style.backgroundColor=document.getElementById("tabcontentcontainer").style.backgroundColor=themecolor
	aobject.className='current'
}

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=(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
	
//Dynamicdrive.com persistence feature add-on

var enablepersistence=true //true to enable persistence, false to turn off (or simply remove this entire script block).
var persisttype="local" //enter "sitewide" for Tab content order to persist across site, "local" for this page only

function get_cookie(Name) { 
var search = Name + "="
var returnvalue = "";
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) { 
offset += search.length
end = document.cookie.indexOf(";", offset);
if (end == -1) end = document.cookie.length;
returnvalue=unescape(document.cookie.substring(offset, end))
}
}
return returnvalue;
}

function savetabstate(){
var cookiename=(persisttype=="sitewide")? "tabcontent" : window.location.pathname
var cookievalue=(persisttype=="sitewide")? tabsourceindex+"|"+previoustab+";path=/" : tabsourceindex+"|"+previoustab
document.cookie=cookiename+"="+cookievalue
}

window.onunload=savetabstate