.val(value) and ASP.NET TextBoxes

.val(value) and ASP.NET TextBoxes

I have an ASP.NET TextBox with AutoPostBack=true.

When I run $(myInputElement).val(value); in Internet Explorer 8, the AutoPostBack no longer works. I'm guessing that the problem lies more with IE8 than jQuery, since none of the other browsers break, but I'm curious if anybody else has seen this problem or knows of a workaround?