Using images instead of buttons for vB Code

[Tigga]

I tried posting this on the vBulletin.com board, but never could get any help with it so I was hoping that maybe someone here would be able to help.
I receintly added a bunch of new vB Codes for my members to use on the board. I would like to add some buttons in the format panel (the one's right above the text area that you can use to insert vB Code), but it would become really cluttered if I tried to add them all. I tried making some images to use instead, but I can't seem to get them to work right. I tried changing the code's so to something like this...

<input type="image" src="atbutton.gif" " title="Insert Email Address" onclick="namedlink(this.form,'EMAIL')" onmouseover="stat('email')">

But that didn't work and caused the buttons to act funny. Has anyone sucessfully done this or know how I would go about changing the buttons to images? Any help would be much appreciated.

Thanks,
Brian