function populateURL()
{
	if ($('#username').val().length >= 4) {
        document.getElementById('username_url').innerHTML = $('#username').val();
		$.get("/ajax/valid_username", {
			username: $('#username').val()
		}, function(data){
			if (data == 0) 
				$('.url').css({
					backgroundImage: "url(/images/icons/cross.png)"
				});
			else 
				$('.url').css({
					backgroundImage: "url(/images/icons/accept.png)"
				});
		});
	} else {
		$('.url').css({
			backgroundImage: "url(/images/icons/cross.png)"
		});	
	}
}

function highlight_fieldset(num)
{
	$('#pt'+num).fadeTo(250, 1);
}