var st = 1; var w = 0; var h = 0; function deadCenter(w,h,url) { if (window.screen) { var chasm = screen.availWidth; var mount = screen.availHeight; putItThere = window.open(url,'posB','width=' + w + ',height=' + h + ',status=' + st + ',left=' + ((chasm - w - 10) * .5) + ',top=' + ((mount - h - 30) * .5)); putItThere.focus(); } }