var orig_image = new Array('images/bt_home.gif','images/bt_aboutus.gif','images/bt_contactus.gif','images/bt_locations.gif','images/bt_swimschool.gif','images/bt_otherservices.gif');
var swap_image = new Array('images/b2_home.gif','images/b2_aboutus.gif','images/b2_contactus.gif','images/b2_locations.gif','images/b2_swimschool.gif','images/b2_otherservices.gif');
var item = new Array("Services","Philosophy","Articles","Resources","Programs","Personal training","About us","Join up","Coaches","Home");

var orig_men = new Array(orig_image.length);
var swap_men = new Array(swap_image.length);

if (document.images)
{
for (loop=0; loop < swap_image.length; loop++)
	{
	orig_men[loop] = new Image;
	swap_men[loop] = new Image;
	orig_men[loop].src = orig_image[loop]; 
	swap_men[loop].src = swap_image[loop]; 
		}
}

function swap_it(menu_item)
	{
	if (document.images)
		{
		document.images[menu_item+10].src=swap_men[menu_item].src;
		}
	}

function swap_back(menu_item)
	{
	if (document.images)
		{
		document.images[menu_item+10].src=orig_men[menu_item].src;
		}
	}