Javascript drowdown problem - Drupal

I need to debug javascript voor IE on this website. When you see the homepage, the dropdown's in the header (Select a Composer and Select a Orchestra) show properly. But when you开发者_高级运维 see a detail page in IE, the dropdown's are fully shown... I don't know shit about javascript. Does anyone have an idea where to look? It's a Drupal website with a lot of javascript...

Thanks in advance!

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From what i can tell it isnt loading the

<link type="text/css" rel="stylesheet" media="all" href="/themes/garland/minnelli/custom/css/fg.dropdown.css?R" />

properly. Cannot find why tho. Hate devtools is so useless for IE :(

Anyway the dropdown has the state Hidden when isnt being dropped down, but seems IE cant access this style and hide it from what i can tell.

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Ok guys, I figured out the problem. I had to optimize the CSS and JS structure in the Drupal admin menu!