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側邊欄廣告 title> <br> <br>#show { 寬度：100px;高度：80px；背景：#0f0；位置：固定； _位置：絕對；右：0px；頂部：0px ;} <br> <br> <br>window.onscroll = window.onresize = window.onload = function(){ <br><br>var oDiv = document.getElementById("show"); <br>var sTop = document.documentElement.scrollTop ||文檔.body.scrollTop; <br>var cHeight= document.documentElement.clientHeight ||.body.body.clientHeight // oDiv.style.top = parseInt(sTop mid) "px"; // 理論上應該只假設這句話就可以居中吧<br> <br>// 實際上的四大瀏覽器只認識下面這個if判斷<br>if(navigator.appVersion.indexOf("MSIE 6") > -1){ <br>oDiv.style.top = parseInt( sTop mid) "px"; <br>}else{ <br>oDiv.style.top =mid "px"; <br>} <br>} <br><br>
