function check(){
 if (document.getElementById("form1").name.value == "") {
    alert("Error - 'Name' is a required field");
    document.getElementById("form1").name.focus();
    return false;}
if (document.getElementById("form1").lastname.value == "") {
    alert("Error - 'Last Name' is a required field");
    document.getElementById("form1").lastname.focus();
    return false;}
if (document.getElementById("form1").job.value == "") {
    alert("Error - 'Job' is a required field");
    document.getElementById("form1").job.focus();
    return false;}	
if (document.getElementById("form1").address.value == "") {
    alert("Error - 'Mailing Address' is a required field");
    document.getElementById("form1").address.focus();
    return false;}	
if (document.getElementById("form1").company.value == "") {
    alert("Error - 'Company' is a required field");
    document.getElementById("form1").company.focus();
    return false;}
if (document.getElementById("form1").proof.value == "") {
    alert("Error - 'Proof of Employment' is a required field");
    document.getElementById("form1").proof.focus();
    return false;}	
if (document.getElementById("form1").proof.value == "") {
    alert("Error - 'Proof of Employment' is a required field");
    document.getElementById("form1").proof.focus();
    return false;}
if (document.getElementById("form1").verification.value == "") {
    alert("Error - 'Verification Code' is a required field");
    document.getElementById("form1").verification.focus();
    return false;}	
 if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(document.getElementById("form1").email.value)) { //return (true)
    } else { alert("Enter a valid email address");
    document.getElementById("form1").email.focus();
    return (false);}
 if (document.getElementById("form1").phone.value == "") {
    alert("Error - 'Phone' is a required field");
    document.getElementById("form1").phone.focus();
    return false;}
 if (document.getElementById("form1").date.value == "") {
    alert("Error - 'Date' is a required field");
    document.getElementById("form1").date.focus();
    return false;}
 if (document.getElementById("form1").number_guests.value == "") {
    alert("Error - 'Number of Guests' is a required field");
    document.getElementById("form1").number_guests.focus();
    return false;}
 if (document.getElementById("form1").time_start.value == "") {
    alert("Error - 'Starting and ending time' is a required field");
    document.getElementById("form1").time_start.focus();
    return false;}
 if (document.getElementById("form1").time_end.value == "") {
    alert("Error - 'Starting and ending time' is a required field");
    document.getElementById("form1").time_end.focus();
    return false;}
 if (document.getElementById("form1").party.value == "") {
    alert("Error - 'Party' is a required field");
    document.getElementById("form1").party.focus();
    return false;}
 if (document.getElementById("form1").position.value == "") {
    alert("Error - 'Position' is a required field");
    document.getElementById("form1").position.focus();
    return false;}
 if (document.getElementById("form1").archivo.value == "") {
    alert("Error - 'Resume' is a required field");
    document.getElementById("form1").archivo.focus();
    return false;}
}