var _mdiv = document.getElementById("mdiv");
var _mds = _mdiv.offsetHeight;

function setWindow() {
    try{
        var ws = windowSize()
        var _mdc = _mdiv.style.height;
        if(ws[1] > _mds) {
            var sd = getScrollXY()
            var st = ws[1] + sd[1] - 45;
            _mdiv.style.height = st + "px";
        }else if(_mds != _mdc && _mds > _mdc) {
            _mdiv.style.height = _mds + "px";
        }
    }catch(ex){}
}

//if(is_ie6) {
window.onresize = setWindow;
setWindow();
//}