How to write custom ajax inside calendar create panel

[manosingh]

I have a custom entity where i have 3 fields like Lead , User

Here i need to make user listing based on the lead selection

Example :

On selecting Lead 'A ' , In User drop down i need to show only the listing like User 'B,C,D'
On selecting Lead 'A1 ' , In User drop down i need to show only the listing like User 'B1,C1,D1'

For this how can i write a custom ajax to populate value. Let me know how to do this one.

Thanks in advance

[ganesanjc]

khopper