I have some drop down menus that have mouseover images for the main bar then bullets that load as an image in each <li> tag for the sub links. Everything looks great except in IE whenever I mouseover each link, the images in the main nav bar and the bullet images next to the sub-links flicker. This only happens if IE is set to check for newer versions of stored pages each visit.

Does anybody know of a way to keep the images from flicker? Is there a way to keep IE from reloading the images when mousing over each link?