Hi everyone!

Assume that I have a drop down field whereby a user can select a make of mobile phone i.e. Nokia, Samsung...

What I wish to happen is that when a user selects Nokia another drop down field will update its values to include for example 6210, 5230 etc (i.e. the models of Nokia phones).

This data will be taken from a MySQL database but I wish to do this without a page refresh.

Can somebody please help me or point me in the right direction? Many thanks.