var yenix = null;
function popup(a,b,c) {
if(yenix == null || yenix.closed) {
yenix=window.open(a,"outputWindow","menubar=no,scrollbars=yes,resizable=no,width=500,height=300");
} else {
window.yenix.location=a;
}
if(navigator.appName == "Microsoft Internet Explorer" &&
  parseInt(navigator.appVersion) >= 4) {
      yenix.focus();
      } else {
      if(navigator.appName != "Microsoft Internet Explorer")
      yenix.focus(); }
}