Resize a image included in a raw

[nBm]

Hi guys,
I've got a problem. I uploaded in my forum a plugin for use the avatar variable ({vb:raw cus_avatar}) in headinclude template, but i want that the image will be resized in 100x100, whatever the size.
The script is this:

PHP Code:

if ($vbulletin->userinfo['userid']) 
{ 
    require_once('./includes/functions_user.php'); 
    $avatar_url = fetch_avatar_url($vbulletin->userinfo['userid']); 

  $avatar = $avatar_url[0]; 
  $cus_avatar = '<a href="profile.php?do=editavatar"><img src="'.$avatar.'" border="0" alt="" /></a>'; 

  $templater = vB_Template::create('headinclude'); 
  $templater->register('cus_avatar', $cus_avatar); 
  vB_Template::preRegister('headinclude',array('cus_avatar' => $cus_avatar)); 
  $templater->render(); 
} 

I tried to use spans or divs, but in vain.
There is a method for insert into the php code the image resizing?
Thanks

[kh99]

Maybe try adding width="100" height="100" to the image tag.