function checkForm() {
		
	if (document.mainForm['name'].value=='') {
				
		alert('Please, fill your Name and Surname!');
		return false;
	}
		
	if (document.mainForm['email'].value=='') {
			
		alert('Please, fill your Email!');
		return false;
	}
			
	if (document.mainForm['message'].value=='') {
		
		alert('Please, fill your Message!');
		return false;
	}
			
	return true;
}