create panel on selected item of dropdwnlist & paneldata add

Question

hello sir............

this is my form



when i am click "OTHER AUTHORS" items of dropdown list that time on PANEL is Created at the Right side of same Form and add some control fild of that form also when SUBMIT that form that time FORM IS HIDE and SUBMITED DATA is show on Authors Dropdownlist...
means Submitted record is shown in Authors Dropdown list ........
Please sir give me  step by step example............bcoz  i am fresher..for developing  field ...please help for PANEL example..........................