如何在IE8标准模式下检测窗口是否真的调整大小？

My site has many style sheets customized for varying screen widths. As the browser is resized, the window.onresize event checks that a resize actually took place by looking at document.documentElement.clientWidth. If it did, it turns on successively larger style sheets until scrollbars appear. Then, it turns them off in reverse order until scrollbars disappear. Scrollbars are detected by comparing offsetWidth to scrollWidth.My site has many style sheets customized for va