function ValidateForm(frm) {
reg = /^[0-9]{7,11}$/;
wyn = document.getElementById('phone').value.match(reg);
reg1 = /^[a-zA-Z0-9]{1,30}@[a-zA-Z0-9]+(\.[a-zA-Z0-9]+)+$/;
wyn1 = document.getElementById('email').value.match(reg1);

        if (document.getElementById('checkin').value == ""){
        alert("Please enter valid check In Date");
        return false;
        }
        if (document.getElementById('checkout').value == ""){
        alert("Please enter valid Check Out Date");
        return false;
        }
        if (document.getElementById('rooms_number').value == ""){
        alert("Please enter valid Rooms Number");
        return false;
        }
        if (document.getElementById('name').value == ""){
        alert("Please enter valid Name");
        return false;
        }
        if (document.getElementById('email').value == ""){
        alert("Please enter valid e-mail");
        return false;
        }
        if (document.getElementById('firstname').value == ""){
        alert("Please enter valid First name");
        return false;
        }
        if (wyn == null) { ;
        alert("Please enter valid Phone number");
        return false;
        }
        if (wyn1 == null) { ;
        alert("Please enter valid email");
        return false;
        }
}