function start() {
			
			var bodid = document.getElementsByTagName("body")[0].id;
			if(bodid == "home") {
				document.getElementById('link_1').src='images/tnHome-on.png';
			}else if(bodid == "meet") {
				document.getElementById('link_2').src='images/tnMeet-on.png';
			}else if(bodid == "servicesPage") {
				document.getElementById('link_3').src='images/tnServices-on.png';
			}else if(bodid == "dentures") {
				document.getElementById('link_4').src='images/tnOffers-on.png';
			}else if(bodid == "success") {
				document.getElementById('link_5').src='images/tnSuccess-on.png';
			}else if(bodid == "contact") {
				document.getElementById('link_6').src='images/tnContact-on.png';
			}else if(bodid == "payment") {
				document.getElementById('link_7').src='images/tnPayment-on.png';
			}else {
				return false;
			}
		
			if(bodid != "home") {
				document.getElementById('link_1').onmouseover = function() {
					document.getElementById('link_1').src='images/tnHome-on.png';
				}
			
				document.getElementById('link_1').onmouseout = function() {
					document.getElementById('link_1').src='images/tnHome.png';
				}
			}
			
			if(bodid != "meet") {
				document.getElementById('link_2').onmouseover = function() {
					document.getElementById('link_2').src='images/tnMeet-on.png';
				}
				document.getElementById('link_2').onmouseout = function() {
					document.getElementById('link_2').src='images/tnMeet.png';
				}
			}
			
			if(bodid != "servicesPage") {
				document.getElementById('link_3').onmouseover = function() {
					document.getElementById('link_3').src='images/tnServices-on.png';
				}
				document.getElementById('link_3').onmouseout = function() {
					document.getElementById('link_3').src='images/tnServices.png';
				}
			}
			
			if(bodid != "dentures") {
				document.getElementById('link_4').onmouseover = function() {
					document.getElementById('link_4').src='images/tnOffers-on.png';
				}
				document.getElementById('link_4').onmouseout = function() {
					document.getElementById('link_4').src='images/tnOffers.png';
				}
			}
			
			if(bodid != "success") {
				document.getElementById('link_5').onmouseover = function() {
					document.getElementById('link_5').src='images/tnSuccess-on.png';
				}
				document.getElementById('link_5').onmouseout = function() {
					document.getElementById('link_5').src='images/tnSuccess.png';
				}
			}
			
			if(bodid != "contact") {
				document.getElementById('link_6').onmouseover = function() {
					document.getElementById('link_6').src='images/tnContact-on.png';
				}
				document.getElementById('link_6').onmouseout = function() {
					document.getElementById('link_6').src='images/tnContact.png';
				}
			}
			
			if(bodid != "payment") {
				document.getElementById('link_7').onmouseover = function() {
					document.getElementById('link_7').src='images/tnPayment-on.png';
				}
				document.getElementById('link_7').onmouseout = function() {
					document.getElementById('link_7').src='images/tnPayment.png';
				}
			}
		}

window.onload = start;