function newWin(obj){
var sw = screen.width;
var sh = screen.height;
var winOpt = "width=650,height=500,left=" + ((sw - 650) / 2) + ",top=" + ((sh - 500) / 2) + ",menubar,toolbar,location,directories,status,scrollbars,resizable";
thisWin = window.open(obj.href,obj.target,winOpt);
}