function popup(url,width,height) {
	var newwindow = "";
	n_height = parseFloat(height)+45;
	n_width = parseFloat(width)+30;
	if (newwindow.location && !newwindow.closed) {
		newwindow.location.href = url;
	}
	else {
		newwindow=window.open(url,"popup","left=20,top=20,height="+n_height+",width="+n_width+",resizable=yes,scrollbars=no,dependent=no");
		if (!newwindow.opener) newwindow.opener = self;
		if (window.focus) {newwindow.focus()}
	}
}