var OpenWindowKey = 0;
function OpenWindow(url, width, height, add) {
	if (add) {
		(url.indexOf('?')!=-1) ? url += '&'+add : url += '?'+add;
	}
		
	window.open(url,'open_window_'+OpenWindowKey,'scrollbars=1,toolbar=no, location=no, directories=no, status=no, menubar=no, resizable=yes, width='+width+', height='+height);
	OpenWindowKey = OpenWindowKey + 1;
	return false;
}