/**====================
author:yang qing rong
email:yaqy@qq.com
====================*/
 function imageReSize(imgId,width)
 {
     try{
	   var img=document.getElementById(imgId);
	   if(img.width>img.height){
		   newHeight=img.height*width/img.width;
		   img.width=width;
		   img.height=newHeight;
	   }else
	   {
		   newWidth=img.width*width/img.height;
		   img.width=newWidth;
		   img.height=width;
	   }
    }catch(e){}
}