function returnObjById(id) {
    if (document.getElementById)
        var returnVar = document.getElementById(id);
    else if (document.all)
        var returnVar = document.all[id];
    else if (document.layers)
        var returnVar = document.layers[id];
    return returnVar;
}
function isEmailAddr(s) {
    var rv = false
    if ((s == null) || (s.length == 0))
        rv = false;
    else {
        var reEmail = /([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
        //reEmail = /.+\@.+\..+$/

        rv = reEmail.test(s)
    }
    if (rv) {
        return rv
    } else {
        return false
    }
}

function validation(theForm) {
    if (theForm.name.value == "") {
        alert("Please enter your name.");
        theForm.name.focus();
        return (false);
    }
    if (!isEmailAddr(theForm.email_address.value)) {
        alert("Please enter a complete email address in the form: yourname@yourdomain.com");
        theForm.email_address.focus();
        return (false);
    }
    if (theForm.address.value == "") {
        alert("Please enter your address.");
        theForm.address.focus();
        return (false);
    }
    return (true);
}

function bookings(theForm) {
    if (theForm.Mare_Name.value == "") {
        alert("Please enter Broodmare name.");
        theForm.Mare_Name.focus();
        return (false);
    }
    if (theForm.Mare_Sire.value == "") {
        alert("Please enter Broodmare Sire.");
        theForm.Mare_Sire.focus();
        return (false);
    }
    if (theForm.Mare_Dam.value == "") {
        alert("Please enter Broodmare Dam.");
        theForm.Mare_Dam.focus();
        return (false);
    }
    if (theForm.Mare_Year_of_Birth.value == "") {
        alert("Please enter Broodmare year of birth.");
        theForm.Mare_Year_of_Birth.focus();
        return (false);
    }
    if (theForm.Owner_Name.value == "") {
        alert("Please enter owner name.");
        theForm.Owner_Name.focus();
        return (false);
    }
    if (theForm.Work_Phone.value == "") {
        alert("Please enter work phone number.");
        theForm.Work_Phone.focus();
        return (false);
    }
    if (theForm.Home_Phone.value == "") {
        alert("Please enter home phone number.");
        theForm.Home_Phone.focus();
        return (false);
    }
    if (!isEmailAddr(theForm.email_address.value)) {
        alert("Please enter a complete email address in the form: yourname@yourdomain.com");
        theForm.email_address.focus();
        return (false);
    }
    if (theForm.Mobile.value == "") {
        alert("Please enter mobile phone number.");
        theForm.Mobile.focus();
        return (false);
    }
    return (true);
}