This is the IE6 layout with the spacing of the items looking good.

This is the Firefox screenshot with the spacing of the items out of whack.

Items 1, 3 & 4 are all lower in Firefox than in IE. I have not been able

to fix this. Item 2 is higher than in IE. You will also see that there is a

top margin on the main text of the page in Firefox that is not present in IE6.

Here is a link to a text file of the CSS.