parsing [IMG] tags?

[Mikhailtech]

Actually I noticed a small issue. On line 1945 (or close to it) :

PHP Code:

return '<img src="' .  $link . '" border="1" alt="" />'; 


If I change it to:

PHP Code:

return '<center><img src="' .  $link . '" border="1" alt="" /></center>'; 


it does end up centering every image, but for some reason I can't figure out it also adds additional line breaks every time the post is edited. I can't figure out why this is happening. Is there another way to automatically center all images or does it have to be done manually via the WYSIWYG?