function checkform()
{
	// delete old error message, if it exists
	var errorMsg = document.getElementById('error_msg');
	errorMsg.innerHTML = '';
	errorMsg.className = '';
	
	// refresh error classes
	var nameField = document.getElementById('name');
	nameField.className='';
	nameField.size = 29;
	var emailField = document.getElementById('email');
	emailField.className='';
	emailField.size = 29;
		
	// test for errors
	var isOK = true;
	if(nameField.value==''){nameField.className = 'errorfield'; createErrorMsg(); isOK = false; nameField.size = 26;}
	if(emailField.value=='' /*|| !isValidEmail(emailField.value)*/){emailField.className = 'errorfield'; createErrorMsg(); isOK = false; emailField.size = 26;}					

	//error message generator
	function createErrorMsg()
	{	
		var errorMsg = document.getElementById('error_msg');
		errorMsg.innerHTML = '<span>Please fill in the empty field(s) marked with the</span>';
		errorMsg.className = 'errorbox';	
	}
	return isOK;
	
	// email checker
	//function isValidEmail(email) 
	//{
		// filler
	//	return true;
	//}
}

function clearform()
{
	// delete old error message, if it exists
	var errorMsg = document.getElementById('error_msg');
	errorMsg.innerHTML = '';
	errorMsg.className = '';
	
	// refresh error classes
	var nameField = document.getElementById('name');
	nameField.className='';
	nameField.size = 29;
	var emailField = document.getElementById('email');
	emailField.className='';
	emailField.size = 29;
}