Here are the details from IE8:

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2)
Timestamp: Wed, 23 Sep 2009 21:02:20 UTC

Message: ‘this.el’ is null or not an object
Line: 20
Char: 3
Code: 0
URI: http://theorchardsblog.net/wp-content/themes/moseter/js/mootabs1.2.js

Message: Object doesn’t support this property or method
Line: 1
Char: 1
Code: 0
URI: http://www.theorchardsblog.net/

I disabled the mootabs1.2 in the theme settings… Not sure how to resolve the js error. Thank you!
Chris