var sizedBorderCss = "1 outset buttonhighlight";

function popLog(){
var strURL = "Login.asp"

var winl = (screen.width - 498) / 2;
var wint = (screen.height - 275) / 2;
winprops = 'height='+275 +',width='+498+',top='+wint+',left='+winl+',scrollbars=no'

myWindow = window.open(strURL, "LoginWin", winprops) 

if (parseInt(navigator.appVersion) >= 4) { myWindow.window.focus(); }

}