// JScript 文件
function ResizePic(iwidth,iheight,imgObj)
{
    var img_src = imgObj.src;
    var oldWidth= imgObj.width ;
    var oldHeight = imgObj.height ;
    if(oldWidth>0 && oldHeight>0)
    {
       if(oldWidth/iwidth>=oldHeight/iheight)
       {
           if(oldWidth>iwidth)
           {  
               imgObj.style.width= iwidth + "px"; 
               imgObj.style.height=(oldHeight *iwidth)/oldWidth + "px"; 
           }                
        }
       else
       {
            if(oldHeight>iheight)
            {  
                imgObj.style.height=iheight + "px"; 
                imgObj.style.width=(oldWidth*iheight)/oldHeight + "px"; 
            }
       }
    }
}