var newwindow = '';
function RTpopup(furl, params, hght, wdth) {
	var jsparams = "width=" + wdth + ",height=" + hght + ",location=0,resizable=1,status=0,menubar=0,directories=0,toolbar=0,scrollbars=0,hotkeys=0,left=0,top=0";
	if (!newwindow.closed && newwindow.location) { newwindow.close(); }
	newwindow = window.open(furl+"?"+params,"",jsparams);	
}