//Centers a pop up window on any size browser window
function Popup(mypage, myname, w, h, sc) {
   if (navigator.appVersion.indexOf("AOL") != -1) {
      newHeight = h + 25;
      newWidth = w + 25;
      winprops = 'height=' + newHeight + ',width=' + newWidth + ',scrollbars='+sc
      win = window.open(mypage, myname, winprops);
   } else {
      if (parseInt(navigator.appVersion) >= 4) {
         var offsetW = (screen.width - w) / 2;
         var offsetH = (screen.height - h) / 2;
         winprops = 'height='+ h +',width='+ w +',top='+ offsetH +',left='+ offsetW + ',dependant=yes,resizable=yes,scrollbars='+sc
         win = window.open(mypage, myname, winprops)
         win.window.focus();
      } else {
         newHeight = h + 25;
         newWidth = w + 25;
         winprops = 'height=' + newHeight + ',width=' + newWidth + ',scrollbars='+sc
         win = window.open(mypage, myname, winprops);
      }	
   }
}