function show_hide(item) {
switch(item)
{
	case 'Presentation1' :	
		document.all("Presentation1").style.display='inline';	
		document.all("Presentation2").style.display='none';	
		document.all("Presentation1").style.visibility='visible';
		document.all("Presentation2").style.visibility='hidden';							
	break;
	
	case 'Presentation2' :
		document.all("Presentation2").style.display='inline';			
		document.all("Presentation2").style.visibility='visible';
		document.all("Presentation1").style.visibility='hidden';
		document.all("Presentation1").style.display='none';	
	break;
	
	}	
}

function doProduit(url, height, width)
{
	var popupy = window.screen.height/2 - 200;
	var popupx = window.screen.width/2 - 200;
	var heightN = height;
	if (navigator.appName == 'Netscape')
	{
		var OuvrirQuoi=window.open(url,"suite","toolbar=0,location=0,directories=0,menuBar=0,scrollbars=0,resizable=0,width="+width+",height="+heightN+",screenX="+popupx+",screenY="+popupy);
	    if (!OuvrirQuoi.opener) OuvrirQuoi.opener = self;
        if (OuvrirQuoi.focus != null) OuvrirQuoi.focus();	
// si taille dif alors
			OuvrirQuoi.resizeTo(width,heightN);			
	}
	else
	{
		 var OuvrirQuoi=window.open(url,"suite","toolbar=0,location=0,directories=0,menuBar=0,scrollbars=0,resizable=0,width="+width+",height="+height+",left="+popupx+",top="+popupy);
	    if (!OuvrirQuoi.opener) OuvrirQuoi.opener = self;
		if (OuvrirQuoi.focus != null) OuvrirQuoi.focus();
// si taille dif alors
			OuvrirQuoi.resizeTo(width,height);
		}
}