/***********************************************
* 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 enablepersist="on" //Enable saving state of content structure using session cookies? (on/off)
var collapseprevious="yes" //Collapse previously open content when opening present? (yes/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)
//document.write(alltags[i]);
ccollect[inc++]=alltags[i]

}
}


function getsubElementbyClass(classname){
subccollect=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)
//document.write(alltags[i]);
subccollect[inc++]=alltags[i]

}
}




function contractcontent(omit){
var inc=0
while (ccollect[inc]){
if (ccollect[inc].id!=omit)

ccollect[inc].style.display="none"
inc++
}
}

function contract_sub_content(omit){
var inc=0
while (subccollect[inc]){
if (subccollect[inc].id!=omit)
subccollect[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 expand_sub_content(cid){

if (typeof subccollect!="undefined"){
if (collapseprevious=="yes")
contract_sub_content(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 revive_sub_content(){
contract_sub_content("omitnothing")
selectedItem=getsubselectedItem()
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(){
var cookie_1 = "main_nav";

if (get_cookie(cookie_1) != ""){
selectedItem=get_cookie(cookie_1)

return selectedItem
}
else
return ""
}

function getsubselectedItem(){
var cookie_2 = "sub_nav";

if (get_cookie(cookie_2) != ""){
selectedItem=get_cookie(cookie_2)

return selectedItem
}
else
return ""
}



function saveswitchstate(){



	var inc=0, selectedItem=""
	while (ccollect[inc]){
	if (ccollect[inc].style.display=="block"){
	selectedItem+=ccollect[inc].id+"|"
	}
	inc++
	}
	
	var incsub=0,subselectedItem=""
	while (subccollect[incsub]){
	if (subccollect[incsub].style.display=="block")
	subselectedItem+=subccollect[incsub].id+"|"
	
	incsub++
	}
	
var cookie_1 = "main_nav";
		document.cookie=cookie_1+"="+selectedItem;

	var cookie_2 = "sub_nav";
	
	if(subselectedItem != ""){
		document.cookie=cookie_2+"="+subselectedItem;
	}
	else
	{
	subselectedItem = "none";
		document.cookie=cookie_2+"="+subselectedItem;
	}

}


function do_onload(){
getElementbyClass("switchcontent")
getsubElementbyClass("subswitchcontent")

	if (enablepersist=="on" && typeof ccollect!="undefined")
	revivecontent()
	
	if (enablepersist=="on" && typeof subccollect!="undefined")
	revive_sub_content()

}



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;
}