I'm not totally sure, but I think you need the new keyword?
This appears to be a functioning example of something similar in that it attaches a prototype function to the window scroll. Perhaps it...

You didn't post full enough code for me to test, so please clarify "doesn't work". Do you get an error? Did you check the javascript console (firefox) and/or turn on error messages (IE)?

Javascript is a case-sensitive language.
Array is upper case A. Use new Array().
You have other errors like that.
VB is not case-sensitive. Javascript is.