function openPoll(frm){ 
 var check=0;
 for (i=0;i<frm.elements.length;i++){
  if (frm.elements[i].id.indexOf('answer')!=-1){
   if (frm.elements[i].checked) {check=1;}   
  } 
 }
 if (!check){
  alert('Please, choose an answer');
  return false;
 } 
 return true;
}

function openPollResult(src){ 
 var win=window.open(src,"poll","status=no,scrollbars=no,location=no,menubar=no,resizable=yes, toolbar=no, width=600, height=500");
 win.focus();
 return true;
}