environment variables (ie v. netscape?)

My first query to the list... had to happen sooner or later. I've got the following code, where URL_PATH is defined as 'http://www.domain.com/', and the idea here is that we will only display 'some html stuff' if we're NOT at admin_access.html: $CurrentPage = "http://" . $HTTP_HOST . $REQUEST_URI; if ($CurrentPage != URL_PATH ."admin/admin_access.html"): ?> some html stuff <? endif; So my question: If the full url is 'http://www.domain.com/admin/admin_access.html' why does 'some html stuff' not display in Netscape, but it will display in IE? Any ideas here? I've been up and down the phpinfo() output from both browsers, and I still don't understand... Much thanks, -r3-