/***********************************************
* Switch Content script- © Dynamic Drive (www.dynamicdrive.com)
* This notice must stay intact for legal use. Last updated April 2nd, 2005.
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

var enablepersist="on" //Enable saving state of content structure using session cookies? (on/off)
var collapseprevious="no" //Collapse previously open content when opening present? (yes/no)

var contractsymbol = '<img src="minus.gif">' //'- ' //HTML for contract symbol. For image, use: <img src="whatever.gif">
var expandsymbol = '<img src="plus.gif">'//'+ ' //HTML for expand symbol.


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

function getElementbyClass(rootobj, classname){
var temparray=new Array()
var inc=0
var rootlength=rootobj.length
for (i=0; i<rootlength; i++){
if (rootobj[i].className==classname)
temparray[inc++]=rootobj[i]
}
return temparray
}

function sweeptoggle(ec){
var thestate=(ec=="expand")? "block" : "none"
var inc=0
while (ccollect[inc]){
ccollect[inc].style.display=thestate
inc++
}
revivestatus()
}


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

function expandcontent(curobj, cid){
var spantags=curobj.getElementsByTagName("SPAN")
var showstateobj=getElementbyClass(spantags, "showstate")
if (ccollect.length>0){
if (collapseprevious=="yes")
contractcontent(cid)
document.getElementById(cid).style.display=(document.getElementById(cid).style.display!="block")? "block" : "none"
if (showstateobj.length>0){ //if "showstate" span exists in header
if (collapseprevious=="no")
showstateobj[0].innerHTML=(document.getElementById(cid).style.display=="block")? contractsymbol : expandsymbol
else
revivestatus()
}
}
}

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 revivestatus(){
var inc=0
while (statecollect[inc]){
if (ccollect[inc].style.display=="block")
statecollect[inc].innerHTML=contractsymbol
else
statecollect[inc].innerHTML=expandsymbol
inc++
}
}

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 toggleimages(hideImage, showImage) {
    if (document.getElementById) {
        var hImage = document.getElementById(hideImage)
        hImage.style.display = (hImage.style.display != "block") ? "block" : "none"

        var sImage = document.getElementById(showImage)
        sImage.style.display = (sImage.style.display != "none") ? "none" : "block"

    }
}



// ----- Popup Control ---------------------------------------------------------

function at_display(x) {
    win = window.open();
    for (var i in x) win.document.write(i + ' = ' + x[i] + '<br>');
}

// ----- Show Aux -----

function at_show_aux(parent, child) {
    var p = document.getElementById(parent);
    var c = document.getElementById(child);

    var top = (c["at_position"] == "y") ? p.offsetHeight + 2 : 0;
    var left = (c["at_position"] == "x") ? p.offsetWidth + 2 : 0;

    for (; p; p = p.offsetParent) {
        top += p.offsetTop;
        left += p.offsetLeft;
    }

    c.style.position = "absolute";
    c.style.top = top + 'px';
    c.style.left = left + 'px';
    c.style.visibility = "visible";
}

// ----- Show -----

function at_show() {
    p = document.getElementById(this["at_parent"]);
    c = document.getElementById(this["at_child"]);

    at_show_aux(p.id, c.id);

    clearTimeout(c["at_timeout"]);
}

// ----- Hide -----

function at_hide() {
    c = document.getElementById(this["at_child"]);

    c["at_timeout"] = setTimeout("document.getElementById('" + c.id + "').style.visibility = 'hidden'", 333);
}

// ----- Click -----

function at_click() {
    p = document.getElementById(this["at_parent"]);
    c = document.getElementById(this["at_child"]);

    if (c.style.visibility != "visible") at_show_aux(p.id, c.id);
    else c.style.visibility = "hidden";

    return false;
}

function do_onload(){
uniqueidn=window.location.pathname+"firsttimeload"
var alltags=document.all? document.all : document.getElementsByTagName("*")
ccollect=getElementbyClass(alltags, "switchcontent")
statecollect=getElementbyClass(alltags, "showstate")
if (enablepersist=="on" && ccollect.length>0){
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 (ccollect.length>0 && statecollect.length>0)
revivestatus()
}

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