x = Math.max(0, ((document.body.clientWidth - 904) / 2));
y = 15; //Math.max(0, ((document.body.clientHeight - 739) / 2));
ns4 = (document.layers)? true:false
ns6 = (document.getElementById && !document.all);

if (!ns4) {	document.write('<div id=cadre_ext style="position: absolute; top: '+ y +'; left: '+ x +'; width: 904">');}

window.onresize = recadrer;
function recadrer()
{
	if (ns6)
		cadre = document.getElementById("cadre_ext");
	else
		cadre = document.all.cadre_ext
	
	cadre.style.left = Math.max(0, ((document.body.clientWidth - 904) / 2));
	cadre.style.top = Math.max(0, ((document.body.clientHeight - 734) / 2));
}