//Chrome Drop Down Menu- Author: Dynamic Drive (http://www.dynamicdrive.com)
//Last updated: Jan 1st, 06'

var cssdropdown={
  disappeardelay: 250, //set delay in miliseconds before menu disappears onmouseout
  
  //No need to edit beyond here////////////////////////
  dropmenuobj: null, ie: document.all, firefox: document.getElementById&&!document.all,
  
  getposOffset:function(what, offsettype){
  var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
  var parentEl=what.offsetParent;
  while (parentEl!=null){
  totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
  parentEl=parentEl.offsetParent;
  }
  return totaloffset;
  },
  
  showhide:function(obj, e, visible, hidden){
  if (this.ie || this.firefox)
  this.dropmenuobj.style.left=this.dropmenuobj.style.top="-500px"
  if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover")
  obj.visibility=visible
  else if (e.type=="click")
  obj.visibility=hidden
  },
  
  iecompattest:function(){
  return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
  },
  
  clearbrowseredge:function(obj, whichedge){
  var edgeoffset=0
  if (whichedge=="rightedge"){
  var windowedge=this.ie && !window.opera? this.iecompattest().scrollLeft+this.iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
  this.dropmenuobj.contentmeasure=this.dropmenuobj.offsetWidth
  if (windowedge-this.dropmenuobj.x < this.dropmenuobj.contentmeasure)  //move menu to the left?
  edgeoffset=this.dropmenuobj.contentmeasure-obj.offsetWidth
  }
  else{
  var topedge=this.ie && !window.opera? this.iecompattest().scrollTop : window.pageYOffset
  var windowedge=this.ie && !window.opera? this.iecompattest().scrollTop+this.iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
  this.dropmenuobj.contentmeasure=this.dropmenuobj.offsetHeight
  if (windowedge-this.dropmenuobj.y < this.dropmenuobj.contentmeasure){ //move up?
  edgeoffset=this.dropmenuobj.contentmeasure+obj.offsetHeight
  if ((this.dropmenuobj.y-topedge)<this.dropmenuobj.contentmeasure) //up no good either?
  edgeoffset=this.dropmenuobj.y+obj.offsetHeight-topedge
  }
  }
  return edgeoffset
  },
  
  dropit:function(obj, e, dropmenuID){
  if (this.dropmenuobj!=null) {//hide previous menu
  this.dropmenuobj.style.visibility="hidden"
  this.clearhidemenu()
  }
    if (this.ie||this.firefox){
    if (dropmenuID != null) {
      obj.onmouseout=function(){
          cssdropdown.delayhidemenu()
      }

        /* 
        Ajout pour corriger le positionnement du menu en 1024 * 768 ou en 1280 * 1024
        pour firefox3 deltaLeft = -3 et deltaTop= 0
        pour firefox2 deltaLeft = -2 et deltaTop= 0
        pour IE7      deltaLeft = -1 et deltaTop= +1
        */
      
        if (this.ie){
          offsetDivLeft=1
          offsetDivTop=-1
        } else if (this.firefox){
          offsetDivLeft=3
          offsetDivTop=0
        } else {
          offsetDivLeft=0
          offsetDivTop=-1
        }
      this.conteneur=document.getElementById("conteneur_page")
      if (null != this.conteneur){
        offsetDivLeft+=this.conteneur.offsetLeft
        offsetDivTop+=this.conteneur.offsetTop
      }
      
         this.dropmenuobj=document.getElementById(dropmenuID)
         this.dropmenuobj.onmouseover=function(){cssdropdown.clearhidemenu()}
         this.dropmenuobj.onmouseout=function(){cssdropdown.dynamichide(e)}
         this.dropmenuobj.onclick=function(){cssdropdown.delayhidemenu()}
         this.showhide(this.dropmenuobj.style, e, "visible", "hidden")
         this.dropmenuobj.x=this.getposOffset(obj, "left")
         this.dropmenuobj.y=this.getposOffset(obj, "top")
         this.dropmenuobj.style.left=this.dropmenuobj.x-this.clearbrowseredge(obj, "rightedge")-offsetDivLeft+"px"
         this.dropmenuobj.style.top=this.dropmenuobj.y-this.clearbrowseredge(obj, "bottomedge")+obj.offsetHeight-offsetDivTop+"px"
      }
    }
  },
  
  contains_firefox:function(a, b) {
  while (b.parentNode)
  if ((b = b.parentNode) == a)
  return true;
  return false;
  },
  
  dynamichide:function(e){
  var evtobj=window.event? window.event : e
  if (this.ie&&!this.dropmenuobj.contains(evtobj.toElement))
  this.delayhidemenu()
  else if (this.firefox&&e.currentTarget!= evtobj.relatedTarget&& !this.contains_firefox(evtobj.currentTarget, evtobj.relatedTarget))
  this.delayhidemenu()
  },
  
  delayhidemenu:function(){
  this.delayhide=setTimeout("cssdropdown.dropmenuobj.style.visibility='hidden'",this.disappeardelay)
  },
  
  clearhidemenu:function(){
  if (this.delayhide!="undefined")
  clearTimeout(this.delayhide)
  }
}