function openWindow(iWidth,iHeight,sUrl,sTitre){
	var xMax
	var yMax
	var xOffset
	var yOffset
	if (document.all){
		xMax=screen.width;
		yMax=screen.height;
	} else {
		if (document.layers){
			xMax=window.outerWidth;
			yMax=window.outerHeight;
		} else {
			xMax=640;
			yMax=480;
		}
	}
	xOffset=(xMax-iWidth)/2
	yOffset=(yMax-iHeight)/2
	
	var str;
	str="location=no,menubar=yes,resizable=yes,scrollbars=yes,status=no,toolbar=no,width="+iWidth+",height=400,screenX="+xOffset+",screenY="+yOffset+",top="+yOffset+",left="+xOffset
	window_handle = window.open(sUrl,sTitre,str)
	window_handle.focus()
}