/***********************************************
* 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, "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=""
var paused=false
var imgPause=new Array()
imgPause[0]=new Image()
imgPause[0].src="images/pause_off.gif"
imgPause[1]=new Image()
imgPause[1].src="images/pause_on.gif"


function expandcontent(cid, aobject, fromtimer){
	if (!fromtimer || (fromtimer && !paused)) {
		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
	}
	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], false)
	}
	else
		expandcontent(initialtab[1], tabobjlinks[initialtab[0]-1], false)

	setTimeout("next_click(document.getElementById(\"nextbutton\"), true)",5000)

}

function next_click(aobject, flag){
	var nexttab
	var linkindex=parseInt(previoustab.substr(2))

	if (isNaN(linkindex))
		linkindex=1
	
	if (linkindex==tabobjlinks.length)
		linkindex=0
	
	nexttab="sc"+(linkindex+1)

	expandcontent(nexttab, tabobjlinks[linkindex], flag)
	if (aobject.blur)
		aobject.blur()
		
	if (!paused && flag)
		setTimeout("next_click(document.getElementById(\"nextbutton\"), true)",5000)

	return false
}


function back_click(aobject){
	var nexttab
	var linkindex=parseInt(previoustab.substr(2))

	if (isNaN(linkindex))
		linkindex=1

	linkindex=linkindex-2
	
	if (linkindex==-1)
		linkindex=tabobjlinks.length-1

	nexttab="sc"+(linkindex+1)

	expandcontent(nexttab, tabobjlinks[linkindex], false)
	if (aobject.blur)
		aobject.blur()
	return false
}

function pause_click(aobject){
	var p=document.getElementById("pauseimage")
	if (paused) {
		p.setAttribute("src", imgPause[0].src)
		paused=false
		setTimeout("next_click(document.getElementById(\"nextbutton\"), true)",5000)
	}
	else {
		p.setAttribute("src", imgPause[1].src)
		paused=true
	}
	if (aobject.blur)
		aobject.blur()
	return false
}


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