/***********************************************
* Switch Content 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
*
* 16/8/03 - Amended by Andrew Toon to included an Expand and Collapse
* Image. See http://www.sysadmintips.com
*
***********************************************/

var href = "../pict/plus.gif";
var img_expand  = 	href	// Holds the Collapsed image.
var href = "../pict/minus.gif";	
var img_collapse = href	// Holds the expanded image.

// Split out the file name from the "img_expand" path. If the variable
// "img_expand" above doesn't have a path (i.e. "plus.gif" instead of
// "/images/plus.gif", then the search won't fine the last "/" and will
// return -1, however we are adding one onto the returned value, so we would
// infact get 0, so it will still find the file name, because it will
//start from 0.
var img_expand_num = img_expand.lastIndexOf('/') + 1
var img_expand_file_name = img_expand.substring(img_expand_num)  


var enablepersist="of" //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)
ccollect[inc++]=alltags[i]
}
}

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

// Reset all the images to a plus. Then in the "expandcontent" function the selected
// item will be set to minus.
imgid1="i" + ccollect[inc].id
if (document.getElementById(imgid1) != null) {
	document.getElementById(imgid1).src=img_expand
}
inc++
}
}

function expandcontent(cid){
if (typeof ccollect!="undefined"){


// Hold the prvious setting of the button so you know if the item was in a expanded or
// contracted state. This way if they clicked on the same item that was selected before then
// we can reset the image to the correct one.
imgid="i" + cid
if (document.getElementById(imgid) != null) {
	curimg=document.getElementById(imgid).src
}


if (collapseprevious=="yes")
contractcontent(cid)
document.getElementById(cid).style.display=(document.getElementById(cid).style.display!="block")? "block" : "none"

// Only change the image to a minus if it was a plus before. Otherwise it must have been a minus
// before, and has already been reset to plus by the "contractcontent" function.
if (document.getElementById(imgid) != null) {
	var file_name_num = curimg.lastIndexOf('/') + 1
	var file_name = curimg.substring(file_name_num)  
	if (file_name == img_expand_file_name) {
		document.getElementById(imgid).src=img_collapse
	}
}


}
}

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

// Now reset the image to a collapse icon, if it has been selected.
if (selectedComponents[1] != "none" && document.getElementById("i"+selectedComponents[0]) != null) {
	document.getElementById("i"+selectedComponents[0]).src=img_collapse
}

}

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(){
// prend les href des images d'apres les elements links
if (document.getElementById){
img_collapse = document.getElementById("img_collapse").href;
img_expand = document.getElementById("img_expand").href;
var dummyImage1 = new Image();
dummyImage1.src = img_collapse;
var dummyImage2 = new Image();
dummyImage2.src = img_expand;
img_expand_num = img_expand.lastIndexOf('/') + 1;
img_expand_file_name = img_expand.substring(img_expand_num);

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



/***********************************************
* End of "Switch Content script"
***********************************************/