/***********************************************
* Contractible Headers script- © Dynamic Drive (www.dynamicdrive.com)
* This notice must stay intact for legal use. Last updated Oct 21st, 2003.
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

var genablepersist="on" //Enable saving state of content structure using session cookies? (on/off)
var gcollapseprevious="yes" //Collapse previously open content when opening present? (yes/no)
var gexpandall="dummy" //Contains dummy value unless user clicks either Expand all (yes) or Contract All (no). -hcs

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

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

function gexpandcontent(cid){
if (typeof ccollect!="undefined"){
if (gcollapseprevious=="yes") 
gcontractcontent(cid)
if (gexpandall=="no") 
document.getElementById(cid).style.display="none"
else if (gexpandall=="yes")
document.getElementById(cid).style.display="block"
else
document.getElementById(cid).style.display=(document.getElementById(cid).style.display!="block")? "block" : "none"
}
}

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

function gget_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 ggetselectedItem(){
if (gget_cookie(window.location.pathname) != ""){
selectedItem=gget_cookie(window.location.pathname)
return selectedItem
}
else
return ""
}

function gsaveswitchstate(){
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 gdo_onload(){
ggetElementbyClass("switchcontent")
if (genablepersist=="on" && typeof ccollect!="undefined")
grevivecontent()
}


if (window.addEventListener)
window.addEventListener("load", gdo_onload, false)
else if (window.attachEvent)
window.attachEvent("onload", gdo_onload)
else if (document.getElementById)
window.onload=gdo_onload
if (genablepersist=="on" && document.getElementById)
window.onunload=gsaveswitchstate