Backgroundimage of Cell

I want to change the background image of a cell using JS

[EvilPenguin]

Hi
I've got the following problem : I want to change the background image of a cell depending on a number which is found in another cell. I hope that you can help me. (No problems with the if statements, I just dont know how to get the data from the cell and how to change the background image)

Thanx

[Sinner_G]

How is the number found in that other cell generated?

[moonbiter]

To access the contents of a cell:

document.getElementById('cellID').innerHTML; //W3C DOM

document.all['cellID'].innerHTML; //MS DHTML

To change the background of a cell:

document.getElementById('cellID').style.backgroundImage = 'url(http://image.url)' //W3C DOM

document.all['cellID'].style.backgroundImage = 'url(http://image.url)' //MS DHTML using CSS

or

document.all['cellID'].background = 'http://image.url' //MS DHTML using background attribute

[EvilPenguin]

It worked,
thx