function ValidateContactForm(lang){
	var Name = document.getElementById('name').value;
	var Email = document.getElementById('email').value;
	var Phone = document.getElementById('phone').value;
	var Subject = document.getElementById('subject').value;
	if(Name == '' || Email == '' || Phone == '' || Subject == ''){
		if(lang == 'bg'){
			alert('Имате непопълнено поле.');
		}else{
			alert('Yuo have empty fields.');
		}
	}
}