We have a comment form on our site (amren.com). As a fig leaf, we asked that visitors click an "Agree" button to signify that they understand the rules for posting a comment. Clicking the "Agree" button reveals the comment form. The code reads:

<script type="text/javascript" charset="utf-8">
var jQuery;
(function ($) {
// show the comment form
    $('#showButton').click(function () {
        $('#v-form').toggle();
        if ($('#v-form').is(':visible')) {
            $(this).val('No thanks');
            var $body = $('body'), footerPosition = $('#footer').position(), scrollPosition = $body.scrollTop() + footerPosition.top;
            $('html, body').animate({scrollTop: scrollPosition}, 5000);
        } else {
            $(this).val('I agree');
        }
    });
}(jQuery));
</script>

I recently switched from jQuery 1.4.4 from the Google CDN to jQuery 1.5.0 from your CDN. We have received some complaints that clicking the "Agree" button does not reveal the comment form.

So far, there are two common user agent strings for visitors reporting this problem:

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729

To be honest, I had a bit of trouble getting this "reveal" code working in the first place, but it has been working for months now. It works in my browsers, so I suspect this bug is specific to certain combinations of hardware and software, but I thought you might like to know.

Thanks!