在DIV中获取所有图片并修改其大小

 function  imgSize(strWidth,strHeight){
              var img;
              img = $("#strImg img");     --jquery , div的id 为strImg

            for(var i=0; i<img.length;i++){
                 image = img[i];
              if(image.width>0 && image.height>0){
                 if(image.width>strWidth){
                     image.style.width=strWidth;
                     image.style.height=strHeight;      --一定要加上Style
                 }else{
                     image.style.width=image.style.width;
                     image.style.height=image.style.height;
                 }
              }else{
                  if(image.height>strHeight){
                   
                     image.style.width=strWidth; 
                     image.style.width=strHeight;
                  }else{
                     image.style.width=image.style.width;
                     image.style.height=image.style.height;
                  }
              }
             }
           window.onload=imgSize(200,200);
          }