Disable weekend date in ajax calendar

Question

Hi,

 

I want to disable weekend date using ajax calendar control.

 

Below  js code is working but its not disabled in calendar. How to do this using c#? 

 

function detect_sunday(sender, args) {

if (sender._selectedDate.getDay() == 0) {

sender._selectedDate = new Date();

// set the date back to the current date

sender._textbox.set_Value(sender._selectedDate.format(sender._format));

//alert("You can't select sunday!");

}

}

 

Pls help