119611 four javascript scripts

i need four javascript programs written to be used in a website i am going to develop. the programs are relatively simple but must work fully and also be commented as best you can. the programs i need are rollover image code picture gallery code (simple click image and load in new window type) mailing and validation (in form of a contact forum, which is validated and if valid is sent to an email address) Incorporated into the mailing and validation i need an alert to tell the user tht it is send in the form of an alert box, saying the page was fully validated and submitted, i need these asap, fully commented and working, Thanks