function toggleForum(id)
	{
		if (document.getElementById('forum_' + id).style.display == "none")
		{
			document.getElementById('forum_' + id).style.display = "";
		}
		else
		{
			document.getElementById('forum_' + id).style.display = "none"
		}
	}

	// images to preload
	var images = Array(
					   'images/info_over.gif',
					   'images/back_over.gif',
					   'images/forward_over.gif'
					  );

	// preload images
	var image = Array;
	for (i = 0; i < images.length; i++)
	{
		image[i]     = new Image;
		image[i].src = images[i];
	}