function showLayer(layerName) {
	if (document.getElementById) {
		var targetElement = document.getElementById(layerName);
		targetElement.style.display = 'inline';
	}
}
function hideLayer(layerName) {
	if (document.getElementById) {
		var targetElement = document.getElementById(layerName);
		targetElement.style.display = 'none';
	}
}
function checkscript() {
	if (document.tehform.iagree.checked != true)	{
		alert('You must tick the box to confirm you agree to the declaration.');
		return false;
	}
	return true;
}