button_1_on  = new Image();button_1_on.src =  "images/b_booking_over.gif";
button_1_off = new Image();button_1_off.src = "images/b_booking.gif";

button_2_on  = new Image();button_2_on.src =  "images/b_view_over.gif";
button_2_off = new Image();button_2_off.src = "images/b_view.gif";

button_3_on  = new Image();button_3_on.src =  "images/b_map_over.gif";
button_3_off = new Image();button_3_off.src = "images/b_map.gif";

button_4_on  = new Image();button_4_on.src =  "images/b_contact_over.gif";
button_4_off = new Image();button_4_off.src = "images/b_contact.gif";


function rollOn(thename) {
	var theImage = "document.b_" + thename;
	var theRoll  = "button_" + thename + "_on";
	eval(theImage).src = eval(theRoll).src;
}

function rollOff(thename) {
	var theImage = "document.b_" + thename;
	var theOff  = "button_" + thename + "_off";
	eval(theImage).src = eval(theOff).src;
}
function popwin(url) { 
			Window = window.open ('', 'Window', 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,height=120,width=600');
			Window.focus();
			Window.location.href = url;
}