home_off = new Image();
home_on = new Image();
home_off.src="images/button_off_home.gif";
home_on.src="images/button_on_home.gif";

goals_off = new Image();
goals_on = new Image();
goals_off.src="./images/button_off_goals.gif";
goals_on.src="./images/button_on_goals.gif";

structure_off = new Image();
structure_on = new Image();
structure_off.src="./images/button_off_structure.gif";
structure_on.src="./images/button_on_structure.gif";


membership_off = new Image();
membership_on = new Image();
membership_off.src="./images/button_off_membership.gif";
membership_on.src="./images/button_on_membership.gif";

calendar_off = new Image();
calendar_on = new Image();
calendar_off.src="./images/button_off_calendar.gif";
calendar_on.src="./images/button_on_calendar.gif";

contact_off = new Image();
contact_on = new Image();
contact_off.src="./images/button_off_contact.gif";
contact_on.src="./images/button_on_contact.gif";

function switcher(image) {
	img = eval(image + "_on.src");
	document.images [image].src = img; 
	}

function switchoff(image) {
	img = eval(image + "_off.src");
	document.images [image].src = img; 
	}