IE navigational issue - extra space, no bullets appear

Okay, so in IE the navigational bar is displaying a bunch of extra white space below menu items and bullets don't appear. I've found the problem too...or at least what was causing it for me.

In dhtml_menu.js there is this line of code:
this.style.display = 'block';
As far as I can tell this is unneeded...it's attached to every menu item. By commenting it out, the IE problems are no longer. Also, I have seen no adverse side-affects from removing it.