Fix Facebook Chat Bar (javascript error)

Hey guys we have a social networking site that has a bug (orgin of problem) 1. Our website [login to view URL] 2. When user login via (Firefox browser) username: test22 password: jc92545 3. You will notice that our chat bar loads instantly example: [login to view URL] (snapshot attached) =============================== Bug: 1. When you login via (Internet Explorer browser) 2. you will notice that their is no chat bar ?? 3. One of our php developers for our site says that were receiving this error Coders Response: "show some error in javascript named xajax,js file" example: [login to view URL] (snapshot attached) ======================== Solution: 1. We need a good coder in ajax and javascript 2. We must debug the chat bar so it loads in both browsers (IE and firefox) 3. Im not a coder so I cannot give you detailed information regarding the server, you would have to find out the source of the problem with minimal help