I am creating a project with a slider in an update panel. On load of the initial page the content (including the slider) is invisible. Once data is entered by the user, the update panel is then refreshed and shown. All of the controls and data show, except for the slider. The slider has the following properties "EnableEmbeddedSkins="false" Skin="TestSkinToday". If I set the "EnableEmbeddedSkins="true" Skin="Vista", the slider will show up as planned. Any thoughts?