What do you mean by disabling an HTML image?
First of all, images cannot be disabled. Even though you disable the image it will look the same in browser.
You can create a second image that and use javascript to change the image when the image is disabled.
You can also place an absolute positioned semi - transparent div element over the image to make it look disabled :
http://codingforums.com/showthread.php?t=56782[
^]
:thumbsup: