Javascript wont automatically start in IE (all versions)

I am having a problem with trying to get a couple of scripts to automatically start once the page is loaded in IE6, 7, and 8.

The scripts run fine in all other browsers (firefox, chrome, safari, opera)

One of the scripts is a jquery script to create a fade in/out effect on hover, the other is an audio toggle script which is supposed to automatically start once the page is loaded.

You can see the page in question here http://www.palladian.tk/

The logo has the fade in/out jquery effect and the speaker image on the left is using the audio toggle script (click on speaker to turn music on or off)