兼容IE6的min-width、min-height

height:auto!<span style="color: #000000;">important;
height:580px;
min</span>-height:580px;

min-<span style="color: #000000;">height:200px;
_height:200px;</span>

#min-<span style="color: #000000;">width{
    min</span>-<span style="color: #000000;">width:900px;
    _width:expression((document.documentElement.clientWidth</span>||document.body.clientWidth)<900?"900px":""<span style="color: #000000;">);
    line</span>-<span style="color: #000000;">height:200px;
    background:#ccc;
}</span>

<span style="color: #000000;">#mpage{
    width:</span>100%<span style="color: #000000;">;
    min</span>-<span style="color: #000000;">width:980px;
    position:relative;
    _width: expression(((document.compatMode </span>&& document.compatMode=='CSS1Compat')? document.documentElement.clientWidth : document.body.clientWidth) ); 
}