Fix error in Os Commerce

This is a very easy project for the right person out there. this project is to be done straight away and will not take more than an hour. Payment of $30 will be sent to winner after i see the end result. These are the terms, if you don't like them then please don't bid. We own a os commerce store on [login to view URL] However we have run into a few problems whilst installing a contribution. When we click on a product it brings the following error: Fatal error: Call to undefined function: clean_html_comments() in /home/royal/public_html/includes/[login to view URL] on line 208 This error will need to be fixed. There are also two more contributions that need to be installed, these are: Google Sitemap Generator for MS2 Google XML Sitemap w/ Admin and Ultimate SEO URLs These can be provided by me. THIS JOB IS URGENT AS WE ARE LOOSING BUSINESS BECAUSE OF IT..