HM_DOM = (document.getElementById) ? true : false;
HM_NS4 = (document.layers) ? true : false;
HM_IE = (document.all) ? true : false;
HM_IE4 = HM_IE && !HM_DOM;
HM_Mac = (navigator.appVersion.indexOf("Mac") != -1);
HM_IE4M = HM_IE4 && HM_Mac;
HM_Netscape = (navigator.appName=="Netscape");

function setmenuclass()
{
	if (HM_Mac || HM_Netscape)
	{
		MM_setTop('menu1',100,'menu2',100,'menu3',100,'menu4',100)
	}
	else
	{ }
		
}
function MM_setTop() { //v3.0
  var i,p,v,obj,args=MM_setTop.arguments;
  for (i=0; i<(args.length-1); i+=2) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+1];
    if (obj.style) { obj=obj.style;}
    obj.top=v; }
}
function setclassIE(objid,Nom)
{
	if (HM_IE) setclass(objid,Nom);
}
function setclass(objid,Nom)
{
	var obj;
	obj=MM_findObj(objid,document);
	alert(obj.className)
	if (obj.className) 
	{
		obj.className=Nom
	}
}
function open_win(nompage,titpage,lg,ht) {
		var fenetre = window.open(nompage, titpage, 'resizable=no,scrollbars=yes,status=no,menubar=no,toolbar=no,directories=no,location=no,width='+lg+',height='+ht+'');
 fenetre.focus()
		}
function MM_openBrWindow(theURL,winName,features) {

  newWindow = window.open(theURL,winName,features);
  newWindow.focus()
}
function addToBasket(reference, description){
 if(confirm('Mettre dans le panier l\'ouvrage "' + description + '" ?')){
  MM_openBrWindow('../../php/scripts/myBasket.php?task=ajouter&ref='+reference,'AjoutPanier','scrollbars=no,resizable=no,width=560,height=429');
 }
}

var currlettre=" ";

function lexclick(lettre)
{
	if (currlettre != " ") cacheCouche('lettre-'+currlettre);
	currlettre=lettre;
	montreCouche('lettre-'+lettre);
}
function cacheCouche(numeroCouche)
{
	document.all[numeroCouche].style.visibility="hidden";
}
function montreCouche(numeroCouche)
{
	document.all[numeroCouche].style.visibility="visible";
}

function HideAllLayers()
{
MM_showHideLayers('menu1','','hide','menu2','','hide','menu3','','hide','menu4','','hide');
}

function ShowLayer(Layer)
{
	HideAllLayers();
	MM_showHideLayers(Layer,'','show');
}

function MM_findObj(n, d) { //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function MM_nbGroup(event, grpName) { //v3.0
  var i,img,nbArr,args=MM_nbGroup.arguments;
  if (event == "init" && args.length > 2) {
    if ((img = MM_findObj(args[2])) != null && !img.MM_init) {
      img.MM_init = true; img.MM_up = args[3]; img.MM_dn = img.src;
      if ((nbArr = document[grpName]) == null) nbArr = document[grpName] = new Array();
      nbArr[nbArr.length] = img;
      for (i=4; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
        if (!img.MM_up) img.MM_up = img.src;
        img.src = img.MM_dn = args[i+1];
        nbArr[nbArr.length] = img;
    } }
  } else if (event == "over") {
    document.MM_nbOver = nbArr = new Array();
    for (i=1; i < args.length-1; i+=3) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = (img.MM_dn && args[i+2]) ? args[i+2] : args[i+1];
      nbArr[nbArr.length] = img;
    }
  } else if (event == "out" ) {
    for (i=0; i < document.MM_nbOver.length; i++) {
      img = document.MM_nbOver[i]; img.src = (img.MM_dn) ? img.MM_dn : img.MM_up; }
  } else if (event == "down") {
    if ((nbArr = document[grpName]) != null)
      for (i=0; i < nbArr.length; i++) { img=nbArr[i]; img.src = img.MM_up; img.MM_dn = 0; }
    document[grpName] = nbArr = new Array();
    for (i=2; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = img.MM_dn = args[i+1];
      nbArr[nbArr.length] = img;
  } }
}

function MM_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }
}