Question

In IE7 only onselecting selectall checkbox only one checjbox gets selected on firefox this works fine..How can this be fixed

   <input type='checkbox' id='selectall' name='selectall' class='selectall' onclick='javascript:selectall1();' /><label><b>Select all</b></label><br>
      <input type="checkbox" id="m_q" name="m_q" value="485">
       select country
      <input type="checkbox" id="m_q" name="m_q" value="486">Select state

<script>
function selectall1()
{
 if ($('#selectall').attr('checked')) {
    $("#m_q:not([disabled='disabled'])").attr('checked', true);
  }
 else{
  $("#m_q:not([disabled='disabled'])").attr('checked', false);
 }

}
 </script>

Answer 1

You should not be using the same id on two different elements.