//  方法：setSelectReadOnly  用于设定极select控件ReadOnly, //        这个一个模拟只读不是真的只读 //        使用了onbeforeactivate,onfocus,onmouseover,onmouseout事件 //    示例：< img src='img.jpg' onload='ImgAutoSize(ImgD,FitWidth,FitHeight)' > ; //  create by sl  // --------------------------------------------------- function ImgAutoSize(imgD,FitWidth,FitHeight)  { var image1=new Image();  image1.onload = function () {     if(this.width>0 && this.height>0)      {          if(this.width/this.height>= FitWidth/FitHeight)          {              if(this.width>FitWidth)              {                  imgD.width=FitWidth;                  imgD.height=(this.height*FitWidth)/this.width;              }              else              {                  imgD.width=this.width;                  imgD.height=this.height;              }          }          else          {              if(this.height>FitHeight)              {                  imgD.height=FitHeight;                  imgD.width=(this.width*FitHeight)/this.height;              }              else              {                  imgD.width=this.width;                  imgD.height=this.height;              }          }      }     image1 = null; } image1.src=imgD.src;  imgD.style.cursor = 'hand'; imgD.onclick= function(){openWin(this.src,'imgphoto',600,400)}; imgD.title = "点击在新窗口中查看原图"; }