function checkmail()
{
	if(!checkIT())
	{
		document.forms.mailform.submit();
	}

}

function checkIT()
{
	var is_error= false;
	
	if(document.getElementById('name').value == ''){
		alert("Please provide your name in the email form.");
		is_error = true;
	}else if(document.getElementById('email').value == ""){
		
		alert("Please provide your email address where you can be contacted.");
		is_error = true;
		
	}else if (document.getElementById('comments').value == ""){
	
		alert("Please tell us what your enquiry is about");
		is_error = true;
		
	}else if (document.getElementById('sum').value == ""){
	
		alert("Please complete the sum equation below correctly.");
		is_error = true;
		
	}
	
	return is_error;
}