FireFox; multiple javascript & adsense conflict?

I have adsense and three javascript connections on the same page.

<script type="text/javascript" src="page.js"></script> 

With the three javacript pages running 4 clocks. Which does use:

<body onload="CoolClock.findAndCreateClocks()" >

Everything works okay in IE, the problem is when opening the page in Firefox, and the page seems to lock almost at random. Expanding the width. Followed by the message in lower left again, connecting which is Google’s 404 page.

Is this caused by Google Analytics?

Although I see the message " Read page… and the page won’t open "

Removing the adsense and everything seems to always load.

What can be done? Does it matter if the clocks are placed within a table?