//ͼƬ°´±ÈÀýËõ·Å
	function DrawImage(ImgD){
		var image=new Image();
		var iwidth = 200;
		var iheight = 160;
		image.src=ImgD.src;
		if(image.width>0 && image.height>0){
			if(image.width/image.height>= iwidth/iheight){
				if(image.width>iwidth){
					ImgD.width=iwidth;
					ImgD.height=(image.height*iwidth)/image.width;
				}else{
					ImgD.width=image.width;
					ImgD.height=image.height;
				}
			}
			else{
				if(image.height>iheight){
					ImgD.height=iheight;
					ImgD.width=(image.width*iheight)/image.height;
				}else{
					ImgD.width=image.width;
					ImgD.height=image.height;
				}
			}
		}
	}

	function DrawImageSmall(ImgD){
		var image=new Image();
		var iwidth = 200;
		var iheight = 160;
		image.src=ImgD.src;
		if((image.width<iwidth)&&(image.height<iheight)){
			ImgD.width=image.width;
			ImgD.height=image.height;
		}
	}