Wordpress: How to find out where to fix a call to Friendconnect.js

Dear Experts,
I am running Wordpress 3.1.1 and I am seeing the following error when I load a page in Internet Explorer

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; InfoPath.2; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
Timestamp: Thu, 7 Apr 2011 10:18:47 UTC

Message: Exception thrown and not caught
Line: 788
Char: 17
Code: 0
URI: http://www.google.com/friendconnect/script/friendconnect.js?key=notsupplied&v=0.8

It is thrown when I try to view this URL: http://www.chinadirectsourcingservices.com.au/events

I would like to simplify things by removing the code that called Friendconnect.js.  However I am taking over this wordpress Web site cold and I don't know where the previous guy put in the call to friendconnect.js.

The other solution is to supply the friendconnect key (I suppose) but again I don't know which file to edit.  If this was a Windows program on my C: drive I suppose I could just search the directory tree for files that connect the string "friendconnect".  Is there some way to do that in Wordpress?

Any ideas on how to make this error go away?
Best Wishes,

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It looks like friendconnect.js is in the header.php file of your theme, around like 78 or so.

You may not want to remove it though, it may be powering a certain aspect of your site.

Instead, I'd suggest getting in touch with the provider of the script for some troubleshooting.  They should be able to help you out.

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PTRUSCOTTAuthor Commented:
OK - so you don't have a clear idea about which plugins depend on it?
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