My HTML is something like this

<div id="mydiv" class="common">
      <input type="text" id="text1" value="" />
      <input type="text" id="text2" value="" />
</div>

I am assigning a function on the onclick event of the textbox like this

$(document).ready(function() {
      $(".common input").click(function() {

          //////// What I am trying to do is access the id of its parent 
                // in this case it is "mydiv"
          alert($(this:parent).attr('id'));
});

But it is not working