Adding a class to IMCE images

I wanted to add a class to all images inserted with IMCE so that I could style them without also styling smileys, and it's a simple case of adding class="imce" to line 23 of imce_set_inline.js so that img src="... becomes img class="imce" src=".... I figured this would be a failry useful feature, maybe even making it an option in the admin panel so users could customise the class assigned to images.