Strange behavior on pocket IE

[Andre Scheiberle]

Hi all,

i developed a web page that adds an HTML INPUT Element on submit via AJAX.
By the next submit i want to check the value of the added INPUT element.

In IE 7 i call document.getElementById(id); and in the attribute VALUE is my
text of the INPUT field. Everythins is fine.

In PIE i call document.all[id]; and the attribute VALUE ist empty. Why?

What can be the problem?
Thanks