I have modified AjaxControlToolkit from original source and named as Actkit. how to use Actkit and AjaxControlToolkit in single page?

Question

Dear friends,

I want to disable past dates, so I modified AjaxControlToolkit.dll to disable past dates and named as "Actkit.dll". Its working fine.

I want to use "AjaxControlToolkit.dll" and "ActKit.dll" in single page.

One Textbox mapped with AjaxControlToolkit:calenderextender(need to select past date) : Not working

One Textbox mapped with Actkit:calenderextender (past date not selectable) : Working

Please help me an example to use both dll in single page or give any solution