Need some help on solving a issue with ClientScript.RegisterClientScriptBlock.

Hopefully somebody has seen this before.

I am getting a error that states that TypeLoadException was unhandled by user code.

Could not Load type 'Javascript' from assembly 'App_Code.ti5_zjxv, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'.

Heres the code:
Page.ClientScript.RegisterClientScriptBlock(Type.GetType("Javascript", True, True), "ShowPopupMenu", sJS)

oPage.ClientScript.RegisterClientScriptBlock(Type.GetType("Javascript", True, True), "NavigateTo", sJS)


This javascript is for navigate and show popupmeun.