function checkEmail(value) {
    if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(value)) {
        return (false)
    }
    return (true)
}

function CheckForm(form) {
    countChecks = 0;
    for (i=0; form.elements[i]; i++) {
        if (form.elements[i].type == "checkbox") {
            if (form.elements[i].checked) countChecks++;
        } 
    }
    if (countChecks==0) { alert("Please select at least one option."); return false; }
    if (form.Name.value == '') { alert("Please enter a your Name and Surname."); return false; }
    if (form.Contact.value == '') { alert("Please enter a your Contact Number."); return false; }
//    if ($('txtCell').value == '') { alert("Please enter your cellphone number."); return false; }
//    if ($('txtTelephone').value == '') { alert("Please enter your telephone number."); return false; }    
    if (checkEmail(form.Email.value)) { alert("Please enter a valid E-mail Address."); return false; }
    return true;
}