Error message

I received the following error message every time running of IE:

“Internet Explorer Script Error

An error has occurred in the script on this page.
Line: 6
Char: 1
Error: The callee [server (not server application)] is not available and disappeared; all connections are invalid. The call did execute.
Code: 0
URL: http://www.1stairfare.info/

Do you want to continue running scripts on thi page?”

Q: Why does this message appeared every time and what should I do?