ASP.Net URL Routing: Images stop displaying when page is routed

hi 

this is my last  thread

http://www.aspforums.net/Threads/141680/Pass-Custom-Data-through-URL-Routing-in-ASPNet/

in details.aspx i have datalist that have 3 lable and 1 image when i write this code in global.aspx

public static void RegisterRoutes(RouteCollection routes)
  {
      routes.Add("BikeSaleRoute", new Route
      (
         "bikes/{Data}",
         new CustomRouteHandler("~/Details.aspx")
      ));
  }

when i type behtob.com/bikes/1111 in addressbar it go to details.aspx and show this page with datalist that fill from my db 3 lables and 1 image

 but when i  write this code in my global.asax

public static void RegisterRoutes(RouteCollection routes)
  {
      routes.Add("BikeSaleRoute", new Route
      (
         "{Data}/",
         new CustomRouteHandler("~/Details.aspx")
      ));
  }

i should type behtob.com/1111 in address bar it go to details.asax but in my datalist just show 3labales that i bind from db it did'nt show image that i bind from DB  what should i do? I want use second code.

thanks