Let me start off by saying you may want to dowload Google Chrome or Firefox. If you're unwilling to do that, I know what your problem is otherwise. Internet Explorer doesn't like the coding used for the drop down navigation bars so it closes them extremely fast and makes it difficult to click on things. Well, the solution to this is simple actually.
What you need to do if you're not willing to download Google Chrome or Firefox is to right click and hold on the main subject of the drop down bar. So say you want WoW Guides. Right click, hold then mouse over the guide you want, release the right click and Internet Explorer doesn't know any better and doesn't close out the bar on you!
I should start writing guides on things other than just games....