function showBlock(idName){
         if(document.getElementById) {//NN6,Mozilla,IE5?
            document.getElementById(idName).style.display = "block";;
         }
         else if(document.all) {      //IE4?
            document.all(idName).style.display = "block";;
         }
         else if(document.layers) {   //NN4?
            document.layers[idName].display = "block";;
         }
      }
function hideBlock(idName){
         if(document.getElementById) {//NN6,Mozilla,IE5?
            document.getElementById(idName).style.display = "none";;
         }
         else if(document.all) {      //IE4?
            document.all(idName).style.display = "none";;
         }
         else if(document.layers) {   //NN4?
            document.layers[idName].display = "none";;
         }
      } 
 
      var opened_blocks = new Array;
function switchBlock(id) {
         if (opened_blocks[id]) {
            opened_blocks[id] = false;
            hideBlock(id);
         } else {
            opened_blocks[id] = true;
            showBlock(id);
         }
     }

function getVar (nomVariable)
{
var infos = location.href.substring(location.href.indexOf("?")+1, location.href.length)+"&"
if (infos.indexOf("#")!=-1)
infos = infos.substring(0,infos.indexOf("#"))+"&"
var variable=0
{
nomVariable = nomVariable + "="
var taille = nomVariable.length
if (infos.indexOf(nomVariable)!=-1)
variable = infos.substring(infos.indexOf(nomVariable)+taille,infos.length).substring(0,infos.substring(infos.indexOf(nomVariable)+taille,infos.length).indexOf("&"))
 }
 return variable
 }