Is not working in IE ,HELP ME PLEASE!!

Hello, I got a question. I embeded 4 charts (pie) in a page and in firefox it works perfectly but in IE7 jschart doesn't draw the actual chart, only shows the title and the values, and i tryed to put only one and I have the same result, would you know why??

Thank you

I solved, I had the charts inside a table and IE7 doesn't allow it. I used the float property to align the divs