Sys.ParameterCountException on extend of simple textbox control using microsoft js

Here s my code trying to extend a textbox with microsoft ajax libary

On Page code is as follows :

![Code on the Default.aspx page][1]


Code in the .js file

![.Js file][2]


The error on debug is as follows

![Dubug error in microsoft js file][3]


[1]:

[2]:

[3]:

what wrong am i doing in my code ?

The Error was in the constructor of the class which needed the element to be passed in the initializeBase method . Please see below .

![enter image description here][1]


[1]: