function validate_contact(form)
{
	var valid = true;
	if (form.nume.value.length == 0 || form.nume.value == 'Nume')
	{
		form.nume.className = 'inp red';
		valid = false;
	}
	else
		form.nume.className = 'inp';
	
	if (form.email.value.length == 0 || form.email.value == 'Email' || !is_email(form.email.value))
	{
		form.email.className = 'inp red';
		valid = false;
	}
	else
		form.email.className = 'inp';
	
	if (form.telefon.value.length == 0 || form.telefon.value == 'Telefon')
	{
		form.telefon.className = 'inp red';
		valid = false;
	}
	else
		form.telefon.className = 'inp';
	
	if (form.mesaj.value.length == 0 || form.mesaj.value == 'Mesaj')
	{
		form.mesaj.className = 'txt red';
		valid = false;
	}
	else
		form.mesaj.className = 'txt';
	
	if (!valid)
		alert('Va rugam sa completati toate campurile!');
	
	return valid;
}

function is_email(str)
{
	if (str == '') return false;
	
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	return (filter.test(str) ? true : false);
}