popupWindow = "";

function popup(url) {
    if (!popupWindow.close && popupWindow.location) {
	popupWindow.location.href = address;
    }
    else {
       var top  = (screen.height / 2) - 240;    //  old 370
       var left = (screen.width / 2) - 449;
       var width  = 425; // 407 --  gold 735      // old 620
       var height = 412 // 392 --  gold 370

       popupWindow = window.open(url, "SameWindow", "toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,fullscreen=0,top=0,left=0,height="+height+",width="+width+",top="+top+",left="+left);

       if (!popupWindow.opener) popupWindow.opener = self;
       if (window.focus) popupWindow.focus();
    }
}