function validateForm()
{
	var rc = false;
    var lGuides = document.getElementById('guide-1').checked || document.getElementById('guide-2').checked || document.getElementById('guide-3').checked;
	
    if (!lGuides)
    	alert("Please check off at least one guide.");
	else if (document.form1.person_name.value == "")
		alert("Please enter your name.");
	else if (document.form1.company.value == "")
		alert("Please enter your company's name.");
	else if (document.form1.phone.value == "" && document.form1.email.value == "")
		alert("Please enter your phone number and/or E-mail address.");
	else
		rc = true;

	return rc;
}

function selectGuide(n)
{
	document.getElementById('guide-'+n).checked = true;
}