max-height on asp panel (div) inside td issues

I have a table with 3 rows and 1 column each. In each is an asp:panel control, which I believe is essentially rendered as a div. This div has max-height: 500, width: 100%; and overflow:scroll properties on it.

Problem is that whenever I try to load the page in IE8, it reverts to compatibility review as it cannot render it. If I remove max-height it works fine.

Any idea开发者_Python百科s?

I would try to use "height" as well as "max-height" to make it work with IE. And also specify the unit, in this case "500px".