Nav drop down not working in IE

Here I have a nav working perfectly in all browsers but IE.

In IE(any version) when user hovers over 'about us,' 'membership,' 'classes,' etc.... these words do not change to black text a开发者_如何学运维s they should. It is not swapping out the image.

The javascript that is now in the li was in the a href previously but it needs to be in the li and im thinking a change in the script (im not too skilled with scripts yet) would fix this.

Any suggestions?

The mouseover event doesn't even fire when it gets added to the <li>. It fires when it's on the <a> inside of the <li>. Move the events there. Seems to work without changes to the js too.