function loadWindow(address_str,width,height,title) {
	if(width<1) width = 800;
	if(height<1) height = 400;
	if(title=='') title = 'helpwin';
	if(window.open(address_str, title, 'toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=yes,resizable=yes,copyhistory=yes,width='+width+',height='+height ))
		return true;
}