When I open my yahoo mail in IE Javascript error comes.

A Runtime error has occurred
Do you want to debug?
Line :1
Syntax Error

When I opened in Mozilla it shows error as
missing } in XML expression
[Break on this error] ;if(!window.rm_crex_data) {rm_crex_data=new Array();}if(rm_passback==0){rm_pb_dat...

in

FJ%3D1209100270642869%2FA%3D5117607%2FR%3D0%2F%2A$ &S=12511405&i=140464&ycg=m&yyob=1984&t=2"></img></a></noscript>

How to resolve it?

try to login from here for faster and error-free access
http://us.m.yahoo.com/p/mail

and

It seems you are using new yahoo mail, which needs latest browsers.For error free emailing use yahoo mail classic

Use the below link to return to yahoo mail classic and click yes ,when it asks for "opt out"
http://us.mg1.mail.yahoo.com/dc/optout?s

for co.in account,
http://in.mg1.mail.yahoo.com/dc/optout?s

I wish I can help you friend. I can't get into system diognostics check on my computer because of a run time error problem.
I also have an error propblem when going to mail but it's a 404 file not found error from Google.