function navHighlightOn(navId) {
	document.getElementById(navId).style.background='url(images/highlight.jpg)';
	}
	
function navHighlightOff(navId) {
	document.getElementById(navId).style.background='url(images/spacer.gif)';
	}

function clearField (email) {
	document.getElementById('email').value = email;
	document.getElementById('email').style.color = '#000000';
	}