Javascript being stripped from posts

I am the webmaster of whatsyourdeal.com a coupon compnay, when one of our users posts a coupon in our admin tool, we generate a post for our vbulletin forums, and then generate a post for our blog, recently we have started using javascriupt links for the links to our stores to ensure we get credit for the clickthrough, but wordpress is stripping out the javascript is there anyway to disable the stripping of the javascript.

I am using the wp_insert_post() function any help would be appreciated.
I have been looking through the code but didn’t see any obvious way to prevent this form happening