// JavaScript Document
//variables globales
var preload_list = new Array();
var format=".gif";
var over="_ov";
var preload_flag;
var isNetscape4 = document.layers;
var isNetscape6 = document.getElementById && !document.all
var isNetscape = isNetscape4 || isNetscape6;
var isIE = document.all && !isNetscape;
var DHTML = document.getElementById || document.all || document.layers;
var path_menu="image/index/bouton/";

//compatibilité (guerre des navigateurs)
//retour du style
function mon_element(mon_id)
{
if (isNetscape6)
style=document.getElementById(mon_id).style;
else if (isNetscape4)
style=document.layers(mon_id)
else
style=document.all[mon_id].style;
return (style);
}

//prechargement des images
function preload(url, tableau)
{
	var i=tableau.length;
	if(document.images)
	{
		tableau[i]=new Image();
		tableau[i].src=url;
	}
}

//rollovers
function swap_image(pict, index, tableau)
{
	if(preload_flag && index<tableau.length)
	{
		if(document.images)
		{
			document.images[pict].src=tableau[index].src;
		}
	}
}
preload_flag=false;

function chargement()
{
	preload(path_menu + "btentrer" + over + format, preload_list);
	preload(path_menu + "btentrer" +  format, preload_list);
	preload(path_menu + "btintro" + over + format, preload_list);
	preload(path_menu + "btintro" +  format, preload_list);
	//fin du chargement
	//booleen qui autorise les rollovers
	preload_flag=true;
}