how to pass data from a popup window to a textbox in a jsp page?

[navs13]

i have a jsp page in which i am selecting the truckid of a truck from a drop down menu.as i select the id then a popup should appear from which i will choose the no. of the truck which is retrieved from the database...whic h should then appear in the truck no. text box of the jsp page........but i m not able to do that....please help....

[Dormilich]

do you want to do that by JSP (Java) or JavaScript?

[navs13]

i want to do that in javascript..... but jsp will also be fine.