IE 6, IE 7, and Firefox DIV problem

Did you realize that the DIV usages in IE 6 and Firefox 1 are broken in IE 7 and Firefox 2? Such as the overflow problem and DIV overlapping each other.

To fix this, take out certain width and height declarations and put min-width, max-width, etc. instead.

Besides, to make overflow:auto work in IE7, put position:relative