var  flag=false;  
function  DrawImage(ImgD,ww,hh){  
var  image=new  Image();  
image.src=ImgD.src;  

if(image.width>0  &&  image.height>0)
{ 
  if (image.width>ww && image.height<=hh){
     ImgD.width=ww 
    }
  if (image.height>hh && image.width<=ww){
     ImgD.height=hh
    }
  if (image.height>hh && image.width>ww){
     num=ww/image.width
	
	 height_num=image.height*num
	 
	 if (height_num>hh){
	     num=hh/image.height
		 ImgD.width=image.width*num
		 ImgD.height=hh
	 }
	 else{
	     ImgD.width=ww
		 ImgD.height=image.height*num
	 }
	 
    }	
	ImgD.alt=image.width+"×"+image.height
}
}