if (document.images)	{
									var imageOne = new Image()
									imageOne.src="../images/subnav/register.gif"

									var imageTwo = new Image()
									imageTwo.src="../images/subnav/news.gif"

									var imageThree = new Image()
									imageThree.src="../images/subnav/parks.gif"
									
 									}

		
		function swapGif(image_name) 	{
										if (document.images)	{
																document.images[image_name].src = '../images/subnav/' + image_name + '_on.gif';
																}
										}

		function restoreGif(image_name)	{
										if (document.images)	{
																document.images[image_name].src = '../images/subnav/' + image_name + '.gif';
																}
										}