var img_aboutOn = new Image();
img_aboutOn.src = '/images/interface/about_over.jpg';
var img_aboutOff = new Image();
img_aboutOff.src = '/images/interface/about.jpg';

var img_locateOn = new Image();
img_locateOn.src = '/images/interface/locate_over.jpg';
var img_locateOff = new Image();
img_locateOff.src = '/images/interface/locate.jpg';

var img_joinOn = new Image();
img_joinOn.src = '/images/interface/join_over.jpg';
var img_joinOff = new Image();
img_joinOff.src = '/images/interface/join.jpg';

var img_relatedOn = new Image();
img_relatedOn.src = '/images/interface/related_over.jpg';
var img_relatedOff = new Image();
img_relatedOff.src = '/images/interface/related.jpg';

var img_membersOn = new Image();
img_membersOn.src = '/images/interface/members_over.jpg';
var img_membersOff = new Image();
img_membersOff.src = '/images/interface/members.jpg';

var img_studentsOn = new Image();
img_studentsOn.src = '/images/interface/students_over.jpg';
var img_studentsOff = new Image();
img_studentsOff.src = '/images/interface/students.jpg';

var img_contactOn = new Image();
img_contactOn.src = '/images/interface/contact_over.jpg';
var img_contactOff = new Image();
img_contactOff.src = '/images/interface/contact.jpg';
   
   
function on(img){
	document[img].src = eval(img + 'On').src;
}

function off(img){
	document[img].src = eval(img + 'Off').src;
}
function showMenu(menu) {
//	if(menu == 'about') {
//		var offsetx = 0
//	} else if(menu == 'locate') {
//		var offsetx = 60
//	} else if(menu == 'join') {
//		var offsetx = 159
//	} else if(menu == 'related') {
//		var offsetx = 208
//	} else if(menu == 'members') {
//		var offsetx = 283
//	} else if(menu == 'students') {
//		var offsetx = 362
//	} else if(menu == 'contact') {
//		var offsetx = 418
//	}
		
	alignToImg('img_' + menu,menu,0,24)
	showLayer(menu)
}

function hideMenu() {
	hideLayer('about')
	hideLayer('locate')
	hideLayer('join')
	hideLayer('related')
	hideLayer('members')
	hideLayer('students')
	hideLayer('contact')
}