Populate Dropdown-Checkbox with Dropdown using jQuery, AJAX and MySQL

[abhi10kumar]

I have city and its corresponding locality. City is showing dropdwon and Locality in Dropdown-Checkbox
I got code Dropdown-Checkbox, when user clicks city then its locality will show in Dropdown-Checkbox. It is showing multilist control in thepage but when I choose city it is showing multilist-box rather Dropdown-Checkbox. How I can do with jQuery, AJAX and MySQL.