Effect dimmer lighting in 2 pictures

I have two pictures and I would like to put a lighting control on it. This controller must be like a dimmer. Look effect here: [login to view URL] I want to control focus light intensity through a simple bar. I am looking for a realistic effect. See attached files. requirements: 320 x 215 in flash format. we will put it in a wordpress post. Low budget... I have only 30$ for this service. This is to put in a blog post. We are not the manufacturer, reselling, developer...