function getCheckedValue(radioObj) {
	if(!radioObj)
		return "";
	var radioLength = radioObj.length;
	if(radioLength == undefined)
		if(radioObj.checked)
			return radioObj.value;
		else
			return "";
	for(var i = 0; i < radioLength; i++) {
		if(radioObj[i].checked) {
			return radioObj[i].value;
		}
	}
	return "";
}

function eval()
{
  var input_name="quest_";
  var total=0;
    for (var i=1;i<=5;i++){
      var val = getCheckedValue(document.forms['quest'].elements[input_name+i]);
      if (val=="") return;
      total+=val*1.0;
    }
  switch (true){
    case (total==5):
      document.getElementById('cheap').style.display="block";
      document.getElementById('comfort').style.display="none";
      document.getElementById('hitech').style.display="none";
    break
    case (total>=6 && total<=9):
      document.getElementById('cheap').style.display="none";
      document.getElementById('comfort').style.display="block";
      document.getElementById('hitech').style.display="none";
    break
    case (total>=10 && total<=15):
      document.getElementById('cheap').style.display="none";
      document.getElementById('comfort').style.display="none";
      document.getElementById('hitech').style.display="block";
    break
  }
}