function checkForm()
{
  var errormessage = new String();
// Put field checks below this point.


if(WithoutContent(document.guestform.name.value))
	{
		//errormessage += "\n\nPlease enter your name"; 
		alert('Please enter your name');
		document.guestform.name.focus();
		return false;
	}

if(emailValidator(document.guestform.email) && (document.guestform.email.value.length > 0))
	{
	  alert('Please enter a valid email address or leave it blank');
      document.guestform.email.focus();
      return false;
	}
	

if(WithoutContent(document.guestform.comment.value))
	{ 
		//errormessage += "\n\nPlease enter a comment"; 
		alert('Please enter your message');
		document.guestform.comment.focus();
		return false;
	}


return true;
} // end of checkForm()



function WithoutContent(ss) {
if(ss.length > 0) { return false; }
return true;
}


function emailValidator(elem){
	var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
	if(elem.value.match(emailExp)){
		return false;
	}else{
		return true;
	}
}