v=0;
whichbrowser = navigator.appName;
ver = parseInt(navigator.appVersion);
if ( (whichbrowser == "Netscape" && ver >= 3) || ver == 4 ){v=1;}

ns = (document.layers)? true:false
ie = (document.all)? true:false

ns4 = (document.layers)? true:false
ie4 = (document.all && !document.getElementById)? true:false
dom = (document.getElementById)? true:false

if (ns4){layerRef="document.layers['";		styleSwitch="']";	layerStyleRef=".document";}
if (ie4){layerRef="document.all['";		styleSwitch="'].style";	layerStyleRef="";}
if (dom){layerRef="document.getElementById('";	styleSwitch="').style";	layerStyleRef="";}

function montre(layerName)	{eval(layerRef+layerName+styleSwitch+'.visibility = "visible"')}
function cache(layerName)	{eval(layerRef+layerName+styleSwitch+'.visibility = "hidden"')}
function xpos(layerName)	{return parseInt(eval(layerRef+layerName+styleSwitch+'.left'));}
function ypos(layerName)	{return parseInt(eval(layerRef+layerName+styleSwitch+'.top'));}
function tox(layerName,x)	{eval(layerRef+layerName+styleSwitch+'.left = '+x);}
function toy(layerName,y)	{eval(layerRef+layerName+styleSwitch+'.top = '+y);}
function byx(layerName,x)	{eval(layerRef+layerName+styleSwitch+'.left = '+xpos(layerName)+'+'+x);}
function byy(layerName,y)	{eval(layerRef+layerName+styleSwitch+'.top = '+ypos(layerName)+'+'+y);}




function hauteur(layerName){
	if (ns4){h = document.layers[layerName].document.height}
	if (ie4){h = document.all[layerName].offsetHeight}
	if (dom){h = document.getElementById(layerName).offsetHeight}
	return parseInt(h)
	}
	
function longueur(layerName){
	if (ns4){l = document.layers[layerName].document.width}
	if (ie4){l = document.all[layerName].offsetWidth}
	if (dom){l = document.getElementById(layerName).offsetWidth}
	return parseInt(l)
	}


var fen
function pop_up(sURL, iWidth, iHeight, X0, Y0, bScrollbar){
        var sName, sFeatures;
        sName = 'pop_up';
        if(ie){if((fen)&&(!fen.closed)){fen.close();}}
        if(ns){X=window.screenX+X0;Y=window.screenY+Y0;}
        else {X=X0;Y=Y0;}
        sFeatures = 'toolbar=no,location=no,directories=no,status=yes,menubar=no';
        if ( bScrollbar == false )
                sFeatures += ',scrollbars=no';
        else
                sFeatures += ',scrollbars=yes';
        sFeatures += ',resizable=no,screenY='+Y+',screenX='+X+',top='+Y+',left='+X+',width='+iWidth+',height='+iHeight;
        fen=window.open(sURL, sName, sFeatures);
        }
        
function SetDiv(IDcouche,Content){
	if (dom) {document.getElementById(IDcouche).innerHTML = Content;return;}
	if (ie4) {document.all[IDcouche].innerHTML = Content;return;}
	if (ns4) {with (eval('document.'+IDcouche+'.document')) {open();write(Content);close();}return;}
	}
	
	
 img1on = new Image();        
 img1on.src = "img/nav_pl_contact_on.gif";
 img1off = new Image();        
 img1off.src = "img/nav_pl_contact_off.gif";

 img2on = new Image();        
 img2on.src = "img/nav_precedente_on.gif";
 img2off = new Image();        
 img2off.src = "img/nav_precedente_off.gif";
 
 img3on = new Image();        
 img3on.src = "img/nav_suivante_on.gif";
 img3off = new Image();        
 img3off.src = "img/nav_suivante_off.gif";
 
 img4on = new Image();        
 img4on.src = "img/nav_play_on.gif";
 img4off = new Image();        
 img4off.src = "img/nav_play_off.gif";
 
 img5on = new Image();        
 img5on.src = "img/nav_pause_on.gif";
 img5off = new Image();        
 img5off.src = "img/nav_pause_off.gif"

 img6on = new Image();        
 img6on.src = "img/nav_contact_on.gif";
 img6off = new Image();        
 img6off.src = "img/nav_contact_off.gif"
 
 img7on = new Image();        
 img7on.src = "img/vandenplas_on.gif";
 img7off = new Image();        
 img7off.src = "img/vandenplas.gif"
 
 img8on = new Image();        
 img8on.src = "img/mail_vandenplas_on.gif";
 img8off = new Image();        
 img8off.src = "img/mail_vandenplas.gif"


function change_img(img_name,img_var){

	img=eval(img_var+".src");
	document[img_name].src=img;
	
}