function poppup(url){
  var w = window.open(url,'earth','width=780,height=580,status=yes,resizable=yes,scrollbars=yes');
  if (w){
    w.focus();
  }
}

<!--
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
//-->