/***********************************************
    * Contractible Headers script- © Dynamic Drive (www.dynamicdrive.com)
    * This notice must stay intact for legal use. Last updated Mar 23rd, 2004.
    * Visit http://www.dynamicdrive.com/ for full source code
    ***********************************************/
    
    var enablepersist='off' //Enable saving state of content structure using session cookies? (on/off)
    var collapseprevious='no' //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)
    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