hi can i know how do i make the search bar and check in check out listbox and the advanced search like them?

http://www.visasignaturehotels.com/

what is their input box so big in size ? how do i make that
Textbox with calender input- i know how to make the calender but how to make the calender box inside the box?
the adults and children - the arrows is it an image ? if not how do i make that ? with jquery ?

and the advanced search too

can anyone give me some advise ?