function winopen(url, width, height) {
	if(!width) {
		width=400;
	}
	if(!height) {
		height=500;
	}
	newwindow = window.open(url, "_blank","toolbar=no,location=no,menubar=no,scrollbars=yes,width="+width+",height="+height+",resizeable=yes,status=no");
	if (window.focus) {newwindow.focus()}
}