function contact_us(a) {
	var f = document.forms[0];
	var msg="";
	if(f.c_name.value=="") msg += "You must supply name!<br />";
	if(f.c_email.value=="") msg += "You must supply an email!<br />";
	if(checkMail(f.c_email.value)) msg += "You must supply a VALID email!<br />";
	if(f.c_comm.value=="") msg += "You must supply a comment/message!<br />";
	if(f.c_spam.value!=a) msg += "You must answer the question correctly!<br />";
	if(msg=="") {
		f.submit();
	} else {
		var status=document.getElementById('errors');
		status.innerHTML="<b>Please correct the following errors:</b><br />";
		status.innerHTML+=msg;
		status.style.display="block";
	}
}
function checkMail(e) {
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (filter.test(e)) {
		return false;
	} else {
		return true;
	}
}