I'm afraid you're at the wrong site. These forums are for those hosted here at wordpress.com. Since you're hosted elsewhere, you're running different software than we are here and need to be over at http://wordpress.org That's the site for the downloadable version of the software.
Some quick suggestions though:
- Don't post code unless asked to. Best bet would be to provide a link. Else you're just making folks sit there hitting page down looking to see if there's a follow up or where the end of teh post is.
- You have a lot of broken code there. You may want to try fixing some of it. Chances are something on that list is causing the drop down issue.
- You're probably missing an ending div at teh end of your sidebar. I would try that if the above doesn't fix the issue.
Hope this helps,
[It took me a bit to type all that and track down the validator]