rails app with javasript

i hav a problem... to fetch a correponding value of radio button.

    </td>
    <td>
    <span class="ysmall">
      <div id="Q1" class="yui-buttongroup">
      <%= radio_button :org_review, :Q1, 5%>
      <%= radio_button :org_review, :Q1, 4%>
      <%= radio_button :org_review, :Q1, 3%>
      <%= radio_button :org_review, :Q1, 2%>
      <%= radio_button :org_review, :Q1, 1%> </div></span>
    </td>

Like this I have from Q1 to Q20.... later I want to get the
corresponding values of Q1 to Q20... to know if all are same then
display a message..

    var Qarray1 = new
Array("1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20");

    var m = 0;
    var n = Qarray1[m];
    $temp = "org_review[Q" + n + "]";
    $res1 = document.getElementById($temp)
     var flag = 0;

   for (var j = 1; j <= 20; j++)
   {
      $temp1 = "org_review[Q" + j + "]";
      $res2 = document.getElementById($temp1)

            if ($res1 == $res2)
     {
               alert($temp);
            flag = 1;
     }
     else
     {
        flag = 0;
           }
      }
     if (flag == 1)
     {
             alert("Hey, please go throgh the questions... Its not
boring");
       return false;
     }
    }

But I am not able to fetch the vales... pls help me out somebody.