Internet Explorer error - 'Invalid arguement'
 

My site is working ok in most browsers, but IE gives an error.

It says:

Line: 90
Char: 6
Error: invalid arguement
Code: 0

The site is here: http://www.twh.net.au/pp

I get the exact same error for every page of the site.

I have tried to locate line 90 in the code, but there seems nothing out of the ordinary. But then again I know very little about coding, and I don't even know if I'm looking in the right place.

How can I fix it so the error message won't show up?