Stange script error?

G'day,
Had this funny error coming up over the last few days. Usually when I'm reading email from 1 particular person. It's happening in outlook express only.....I don't know why is says IE on top of the warning? I don't know whether to go yes or no? Gee...I hope it's nothing nasty! Any advice would be greatly appreciated.
Thanks,
Buck.

 

It looks like you are using an email program that uses IE to display HTML mail, and there's some incomplete javascript in the mail from that person. Not knowing javascript, it's hard for me to say what exactly the error means, but you might want to consider seeing if you can disable javascript in your email all together.

 

Thanks for the advice Notok.....
Switching to plain text seems to have sorted it (thanks to dog for that).
I was just interested to know why......and only when reading mail from one person
Buck