public override string GetDesignTimeHtml()
 {
     AdRotator viewControl = (AdRotator) base.ViewControl;
     StringWriter writer = new StringWriter(CultureInfo.CurrentCulture);
     DesignTimeHtmlTextWriter writer2 = new DesignTimeHtmlTextWriter(writer);
     HyperLink link = new HyperLink {
         ID = viewControl.ID,
         NavigateUrl = "",
         Target = viewControl.Target,
         AccessKey = viewControl.AccessKey,
         Enabled = viewControl.Enabled,
         TabIndex = viewControl.TabIndex
     };
     link.Style.Value = viewControl.Style.Value;
     link.RenderBeginTag(writer2);
     Image image = new Image();
     image.ApplyStyle(viewControl.ControlStyle);
     image.SetDesignMode();
     image.ImageUrl = "";
     image.AlternateText = viewControl.ID;
     image.ToolTip = viewControl.ToolTip;
     image.RenderControl(writer2);
     link.RenderEndTag(writer2);
     return writer.ToString();
 }