div显示图片高宽问题

前天发帖搜到这段代码，不能限制图片高宽，大家帮忙看看原因在哪//function $(o){return document.getElementById(o);}   
        function CheckImg(o,img)   
        {   
          if (!/\.((jpg)|(JPG)|(jpeg)|(JPEG))$/ig.test(o.value))   
          {   
             alert('只能上传jpg格式图片!');   
             o.outerHTML = o.outerHTML;   
          }   
          else   
          {   
             var image = document.getElementById("img");
             image.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src=o.value;   
             image.style.display = "block";
             image.style.width = "150px";
             image.style.height = "160px";
             var edit = document.getElementById("btnEdit");
             edit.style.display="block";
          }   
        } 
<div id="img" style="filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src= <%= pic%>,sizingMethod=scale);
            width: 150px; height: 160px; display: none;">
        </div>