function showImgAll(id,h,w)
{
	var oImg = new Image();
	var obj = this.document.getElementById(id);
	oImg.src = obj.src;
	if(oImg.width/w>oImg.height/h)
	{
		if(oImg.width>w)
		{
			obj.width = w;
			obj.height = oImg.height/oImg.width*w;
		}
		else
		{
			obj.width = oImg.width;
			obj.height = oImg.height;
		}
	}
	else
	{
		if(oImg.height>h)
		{
			obj.height = h;
			obj.width = oImg.width/oImg.height*h;
		}
		else
		{
			obj.height = oImg.height;
			obj.width = oImg.width;
		}
	}
}