// JavaScript Document


function ValidaEnquetes(obj){
  respondeu = false;
  for(i = 0; i< obj.length; i++){
    if(obj.elements[i].type == 'radio'){
	  if(obj.elements[i].checked){
	    respondeu = true;
	  }
	}
  }
  if(!respondeu){
     alert('escolha uma opção.');
	 return false;
  }
  else{
    return true;
  }  

}
function abrir(URL) { 

var width = 400; 
var height = 400; 

var left = 99; 
var top = 99; 

window.open(URL,'janela', 'width='+width+', height='+height+', top='+top+', left='+left+', scrollbars=no, status=no, toolbar=no, location=no, directories=no, menubar=no, resizable=no, fullscreen=no'); 

}