把重设新闻中图片尺寸的代码贴出来了，ie8测试通过

代码如下：

我做的只是控制等比例在某个宽度下，适用一般情况了，特别的控制，你自己发散一下思维就可以了。

 <script language="javascript" type="text/javascript">
                    //重设图片尺寸
                    var imgC=document.getElementById("imgC");
                    var limitWidth=570;
                    var imgArr=imgC.getElementsByTagName("img");
                    for(var i=0;i<imgArr.length;i++)
                    {
                        var imgObj=imgArr[i];
                        imgObj.onload=function()
                        {
                            if(this.width)
                            {
                                var orazW=this.width;
    var orazH=this.height;
                                if(orazW>limitWidth)
                                {
                                //this.rel="lightbox";
                                this.width=limitWidth;
                                this.height=(this.width*orazH)/orazW;
                                this.title="点击查看大图";
                                this.style.cursor = 'hand';
                                this.onclick=function(){ var mw = showBigImg("imgShow.aspx", this.src, window.screen.availWidth-100, window.screen.availHeight-100);}
                                }
                            }
                        }
                    }
            </script>