function showAnimal(id)
{
	// hide all
	var divs = document.getElementsByTagName("div");
	for (i = 0; i < divs.length; i++)
	{
		if (divs[i].className == "rehoming_hidden")
		{
			divs[i].style.display = "none";
		}
	}
	// show this one
	var article = document.getElementById("article_" + id);
	divs = article.getElementsByTagName("div");
	for (i = 0; i < divs.length; i++)
	{
		if (divs[i].className == "rehoming_hidden")
		{
			divs[i].style.display = "";
		}
	}
}

function showFirst()
{
	showAnimal(firstID);
}