//requires jquery to work.
function add_hover_effects ()
{
	$('.facebook_img').hover(function ()
		{
			$(this).attr("src","/images/fbbutton1over.gif");
		},
		function ()
		{
		
			$(this).attr("src","/images/fbbutton1.gif");
		}
	);
	$('.twitter_img').hover(function ()
		{
			$(this).attr("src","/images/twbutton2over.gif");
		},
		function ()
		{
		
			$(this).attr("src","/images/twbutton2.gif");
		}
	);
	$('.flickr_img').hover(function ()
		{
			$(this).attr("src","/images/frbutton3over.gif");
		},
		function ()
		{
		
			$(this).attr("src","/images/frbutton3.gif");
		}
	);
}