title: z-index not working in IE
body: <p>I have a button, while clicking the button i just produce a div containing some checkbox. If the user select the required checkbox, it will produce a iframe according to the value of the checkbox and the div will disappear. Its placed immediately below the button. Up to this its working fine.
  If the user again click the button, the droping div is comes behind the frame. Please help me to make it visible above the frame. I have used z-index, its working in firefox - but i cant made it in IE.. </p>
  
  <p>Please help me regarding this.</p>
  
  <p>Thanks<BR>praveen j</p>