Javascript form submit on SP2

[cocoy]

hello to all!

im using javascript to submit my form. im using this:

document.getElementById("myForm").submit();

this works well with IE and on different browsers as well...

but if i use IE running on Windows XP with Service Pack 2, i get this error on page: Access is denied.

can anyone enlighten me on this or suggest some workaround for this problem? thanks...