how to call javascript from c#?

hi all,

  I'm using the following script to call javescript from c#
 
ClientScript.RegisterStartupScript(this.GetType(), "", String.Format("<script>scredit2fun1(" + rdbc21.ClientID + ");</script>"));

 but i'm calling the no of scripts by the following,

ClientScript.RegisterStartupScript(this.GetType(), "", String ...