$(document).ready(function(){
	jQuery.preloadimages = function() {
		for(var i = 0; i<arguments.length; i++) {
			jQuery("<img>").attr("src", arguments[i]);
		}
	}
	
	$.preloadimages("images/nav_about_over.gif", "images/nav_books_over.gif", "images/nav_on_over.gif", "images/nav_news_over.gif", 
     "images/nav_further_over.gif", "images/nav_contact_over.gif", "images/subnav_lordship_over.gif", "images/subnav_ghost_over.gif", 
	 "images/subnav_wool_over.gif", "images/subnav_stillroom_over.gif", "images/subnav_genius_over.gif", "images/subnav_wandering_over.gif", 
	 "images/subnav_man_over.gif", "images/subnav_scargrave_over.gif", "images/subnav_barque_over.gif", "images/subnav_flaw_over.gif", 
	 "images/subnav_white-garden_over.gif", "images/subnav_madness_over.gif" );


    $(".hoverswap").hover(
        function () {
            $(this).attr("src", $(this).attr("src").replace(/.gif/, "_over.gif"));
        },
        function () {
            $(this).attr("src", $(this).attr("src").replace(/_over.gif/, ".gif"));
        }
    );


});