Html Chat Code Not Working

I have had a HTML chat code for a chatroom on my portal and it worked perfectly untill today.. its just vanishes it doesnt show, and ive tried numerous times to re installl the code, but nothing shows.. does anyone have any ideas on how to rectify this please

BTW the code works perfect if I insert it into Frontpage and upload it to my server, Look Here to see it workinghttp://www.netcaferadiolive.co.uk/ncrchat.htm

Thanks In Advance For Any Help

copied the source code,..worked fine on my portal page..

myn also not workin.. can any budy tell how to correct it

Thanks Decibel For taking the time to look... but do you have any ideas on what the problem is as to why it wont work on my portal, when at one time it was working fine?

Linda

Ok Ive sorted this problem I had to remove the Top & Bottom lines of the script to make it work

Thanks