Checking image width/height

[cbk1994]

I'm making a Q Menu, which works, except I'd like to have all icons centered if they're less than 32 x 32.
What's the variable called for imgwidth and imgheight. Several things i tried where:
i = findImg(200);
player.chat = i.imgwidth SPC i.width; // And that returned 0 0 in player.chat

Any help is much appreciated. Thanks.
Chris