I am new to jquery and I have been building a site that uses a single page template for several product pages, I want to use the same base template but at the top of every product page I want to add a different picture. I am looking to create one template, but depending on the page I want to use jquery to  switch a banner that I have designed for that product. I was hoping I could use and of else statement or something to do this 

For Example

If you are on this page URL then find this div and replace the image inside that div with this one.

Is this possible and can someone help me please!!!!!????