Ajax Question

[hollyquinn]

I am working on a project for a classic ASP legacy site, and there is something I want to do that I have been advised I will need to use Ajax for. I am brand new to Ajax and have no idea where to start. I am hoping for some advice. This is what I want to do:

I need to be able to check a record in a database every 20 seconds, and based on what is stored in that record change an image. There will be 3 images that could display based on what is stored in the database record.

If anyone could point me in the right direction, let me know what type of Ajax script I should research that would be wonderful. Thank you

Holly