facebook profile pic not working in div tag in firefox

  <div>
      <img src='http://graph.facebook.com/<?p开发者_开发问答hp $user->id ?>/picture'/>;
</div>

this is the code that i m using to get a facebook profile pic in div ,this div tag is running in java script ,when i run this code in chrome it works well,but in firefox it get blink and then image comes,pls help anybody thanks in advance

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You need to show us more code, also you need to echo the user id:

<img src='http://graph.facebook.com/<?php echo $user->id ?>/picture' alt='' />