Elementary question: How do I set BG IMAGE SiZE for all monitors?

[aundrenash]

Hello,
I'm a beginning graphic/web designer. I created a website with a background
graphic that is 800x640 pixels. The problem is on my screen it fits like it
should (no scrolling necessary etc.) but on monitors with lower (different
resolutions) it's way too large. What script can I use to make sure the
background image is the same or similar size (fits within the browser window
without need for scrollling) on all or the majority of monitors? I'm sure
this is really simple javascript 101 but I'd appreciate the time and help.

 

[VK]

Visit http://www.lynda.com/resources/inspiration/
It will give you a good starting point.