function check_contacts_form() {
	if(!check_is_empty(document.getElementById('txt'))){
		document.getElementById('text_error').style.display = 'block';
		document.getElementById('txt').style.border = '1px #DE3939 solid';
	}
	else {
		document.getElementById('text_error').style.display = 'none';
		document.getElementById('txt').style.border = '1px #278be8 solid';	
	}

	if(!check_email(document.getElementById('email'))){
		document.getElementById('email_error').style.display = 'block';
		document.getElementById('email').style.border = '1px #DE3939 solid';
	}
	else {
		document.getElementById('email_error').style.display = 'none';
		document.getElementById('email').style.border = '1px #278be8 solid';
	}

	if(check_is_empty(document.getElementById('txt')) && check_email(document.getElementById('email')))
	{return true;}
	else
	{return false;}
}


function check_email(email)
{
	var reg = new RegExp("[0-9a-z_]+@[0-9a-z_^.]+\\.[a-z]{2,4}", 'i');
	if (!reg.test(email.value)) {
		return false;
	}
	else{
		return true;
	}
}


function check_is_empty(field)
{
	if (field.value=='') {
		return false;
	}
	else{
		return true;
	}
}