Hi,  In the bookinf form i want to change the location drop down field into an autofill Zipcode field. 

So that a customer fills in his zipcode and near that field the corresponding area name should be displayed. 

I need this change because i have a total of around 100 areas so and the dropdown becomes too long for the customer to choose. 

So please let me know how do I edit this in the shortcode   Senthilnathan