How do I change the output of theme_comment_submitted()? How to change the default theme of comment_submitted in drupal?

Input: 

$variables['submitted'] = theme('comment_submitted', $comment);

Output



My expected result is 


To print the Name in first and time in second.
Should not truncate.


How can this be done?
Add a function in your template.php located in your theme's directory.

function phptemplate_comment_submitted($comment){
  return t('Submitted on @datetime by !username.',
    array(
      '!username' =&gt; theme('username', $comment),
      '@datetime' =&gt; format_date($comment-&gt;timestamp)
    ));
}