var enablepersist="on";
var collapseprevious="no" ;

if (document.getElementById) {
        document.write('<style type="text/css">');
        document.write('.switchcontent{display:none;}');
        document.write('</style>');
}

function getElementbyClass(classname) {
        ccollect=new Array();
        var inc=0;
        var alltags=document.all? document.all : document.getElementsByTagName("*");
        for (i=0; i<alltags.length; i++) {
                if (alltags[i].className==classname)
                ccollect[inc++]=alltags[i];
        }
}

function contractcontent(omit) {
        var inc=0;
        while (ccollect[inc]) {
                if (ccollect[inc].id!=omit)
                ccollect[inc].style.display="none";
                inc++;
        }
}

function expandcontent(cid) {
        if (typeof ccollect!="undefined") {
                if (collapseprevious=="yes")
                contractcontent(cid);
                document.getElementById(cid).style.display=(document.getElementById(cid).style.display!="block")? "block" : "none" ;
        }
}

function revivecontent() {
        contractcontent("omitnothing");
        selectedItem=getselectedItem();
        selectedComponents=selectedItem.split("|");
        for (i=0; i<selectedComponents.length-1; i++)
        document.getElementById(selectedComponents[i]).style.display="block";
}

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 getselectedItem() {
        if (get_cookie(window.location.pathname) != "") {
                selectedItem=get_cookie(window.location.pathname);
                return selectedItem;
        }
        else
        return "";
}

function saveswitchstate() {
        var inc=0, selectedItem="";
        while (ccollect[inc]) {
                if (ccollect[inc].style.display=="block")
                selectedItem+=ccollect[inc].id+"|";
                inc++;
        }
        document.cookie=window.location.pathname+"="+selectedItem;
}

function do_onload() {
        uniqueidn=window.location.pathname+"firsttimeload";
        getElementbyClass("switchcontent");
        if (enablepersist=="on" && typeof ccollect!="undefined") {
                document.cookie=(get_cookie(uniqueidn)=="")? uniqueidn+"=1" : uniqueidn+"=0"
                firsttimeload=(get_cookie(uniqueidn)==1)? 1 : 0 ;//check if this is 1st page load
                if (!firsttimeload)
                revivecontent();
        }
}

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;
if (enablepersist=="on" && document.getElementById)
window.onunload=saveswitchstate;