var img_aboutOn = new Image();
img_aboutOn.src = '../images/tnav1-over.jpg';
var img_aboutOff = new Image();
img_aboutOff.src = '../images/tnav1.jpg';

var img_patientOn = new Image();
img_patientOn.src = '../images/tnav2-over.jpg';
var img_patientOff = new Image();
img_patientOff.src = '../images/tnav2.jpg';

var img_membershipOn = new Image();
img_membershipOn.src = '../images/tnav3-over.jpg';
var img_membershipOff = new Image();
img_membershipOff.src = '../images/tnav3.jpg';

var img_educationOn = new Image();
img_educationOn.src = '../images/tnav4-over.jpg';
var img_educationOff = new Image();
img_educationOff.src = '../images/tnav4.jpg';

var img_membersOn = new Image();
img_membersOn.src = '../images/tnav5-over.jpg';
var img_membersOff = new Image();
img_membersOff.src = '../images/tnav5.jpg';

var img_contactOn = new Image();
img_contactOn.src = '../images/tnav6-over.jpg';
var img_contactOff = new Image();
img_contactOff.src = '../images/tnav6.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 == 'patient') {
//		var offsetx = 90
//	} else if(menu == 'membership') {
//		var offsetx = 180
//	} else if(menu == 'education') {
//		var offsetx = 270
//	} else if(menu == 'members') {
//		var offsetx = 360
//	} else if(menu == 'contact') {
//		var offsetx = 450
//	}
		
	alignToImg('img_' + menu,menu,0,62)
	showLayer(menu)
}

function hideMenu() {
	hideLayer('about')
	hideLayer('patient')
	hideLayer('membership')
	hideLayer('education')
	hideLayer('members')
	hideLayer('contact')
}