I tried posting this in other forums specializing in web design and never got an answer! I have an ASP.NET classified-ads site with all the categories and sub-categories in a table on the front page. I want to make it so people only see the sub-categories when they select the main category, so they won't have to scroll so much to get to the category they want. I use Visual Web Developer 2008 Express Edition and it doesn't seem to like AJAX controls for some reason. Can someone help me work my way around this problem?