<script type="text/javascript">
        var width=document.body.clientWidth;
        var height=document.body.clientHeight;
        //alert(width);
        document.getElementById("data").style.width=width-260+"px";
         document.getElementById("data").style.height=height-140+"px";
        
        document.getElementById("content").style.width=width-260+"px";
        
var mydiv=document.getElementById("data");
var mydiv_resize=function(){
    mydiv.style.width=document.body.clientWidth-260+"px";
    mydiv.style.height=document.body.clientHeight-140+"px";
}
mydiv_resize();
window.onresize=mydiv_resize;
</script>可是窗口变化时div没有变化，请教