function validate_comment(frm1)
{
	if (frm1.username.value=='') {
		alert('Please enter your name to post a comment.');
		frm1.username.focus();
		return false;
	}
	if (frm1.comment.value=='') {
		alert('Please enter your comment');
		frm1.comment.focus();
		return false;
	}
	return true;
}

function showhide(layer_ref, state) {

	if (document.all) { //IS IE 4 or 5 (or 6 beta)
		eval( "document.all." + layer_ref + ".style.display = state");
	}
	if (document.layers) { //IS NETSCAPE 4 or below
		document.layers[layer_ref].display = state;
	}
	if (document.getElementById && !document.all) {
		maxwell_smart = document.getElementById(layer_ref);
		maxwell_smart.style.display = state;
	}
}