Thread:HarrySeaward/@comment-1863391-20120626204545

style="background-image:-moz-linear-gradient(top, #000000 25%, #CFCFCF 75%); background-image:-webkit-gradient(linear, 0% 0%, 0% 100%, color-stop(25%, #000000), color-stop(75%, #CFCFCF));"

style="background-image:-moz-linear-gradient(top, #000000 05%, #CFCFCF 95%); background-image:-webkit-gradient(linear, 0% 0%, 0% 100%, color-stop(05%, #000000), color-stop(95%, #CFCFCF));"

It's best to keep the values the same between the webkit and moz versions, for browser consistency. The "(linear, 0% 0%, 0% 100%)" section is used to define the form of the gradient itself, and I'm assuming you only want vertical transition. Anything else, just let me know :). 