function popit(url,width,height,scroll) {
	var winl = (screen.width-width)/2 - 4;
	var wint = (screen.height-height)/2 + 6;

	if(scroll=="") var scroll = "no";
	var pic = window.open(url,pic,"width=" + width + ",height=" + height + ",top=" + wint + ",left=" + winl + ",scrollbars=" + scroll + ",menubar=no,location=no,directories=no,resizable=no,status=no");
	pic.focus();
}