/***********************************************
* 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
***********************************************/

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){
//     alert(cid + " expanding content");
    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=initTabpostcolor
    aobject.style.backgroundColor=document.getElementById("tabcontentcontainer").style.backgroundColor=initTabcolor
}

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[0], "backgroundColor", "background-color")
    initTabpostcolor=cascadedstyle(tabobjlinks[1], "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])
    }
}