function swap(img, contname, fileSm, fileLg, widthSm, widthLg)
{
	var cont = document.getElementById(contname);
	if (img.width==widthSm)
	{
	    img.src = fileLg;
	    img.width = widthLg;
		cont.style.height=560;
	}
	else {
	    img.src = fileSm;
	    img.width = widthSm;
		cont.style.height=180;
	}
	return false;
};