A quick Google hints that this scripting function is not yet supported on IE8, but that was a couple weeks ago. It would be specific to a site(s) that are using that function. Do other sites work okay?
Have you recently changed to IE8?
Do you have an IE7 or other browser (Firefox, Chrome, etc.) on another system?
What is the link (if it is not personal) and somebody that has access to IE7 and IE8 can try. I can try IE7, Firefox & Chrome.http://sorgalla.com/projects/jcarousel/
jCarousel has been tested and works on the following browsers:
Internet Explorer 6 (PC)
Internet Explorer 7 (PC)
FireFox 18.104.22.168 (PC/Mac/Linux)
Opera 9.01 (PC/Mac)
Safari 2.0.4 (Mac)
Safari 3.1.0 (PC)
Konqueror 3.4.0 (Linux)
To help rule out malicious software, here are some popular scanning tools:
Download, install, update and do a full scan with these free malware detection programs:
Malwarebytes (MBAM): http://malwarebytes.org/
SUPERAntiSpyware: (SAS): http://www.superantispyware.com/
They can be uninstalled later if desired.