<script type="text/javascript" >

        function FirstNameIsValid() {

            st = document.getElementById("fname").value;
           var ok=true;
           if   (Number(st))
           {
            alert("You must enter a valid First Name(not numbers only letters!)");
                document.getElementById("fname").focus();
               ok=false;
               }
            if (st == "") {
                alert("You must enter a First Name");
                document.getElementById("fname").focus();
               ok=false;
            }
             return ok;
        }

        function LastNameIsValid() {

            st = document.getElementById("lname").value;
           var ok=true;
            if   (Number(st))
           {
            alert("You must enter a valid Last Name(not numbers only letters!)");
                document.getElementById("fname").focus();
               ok=false;
               }
            if (st == "") {
                alert("You must enter a last name");
               document.getElementById("lname").focus();
               ok=false;
            }
                 return ok;
        }

        function AgeIsValid() {

            st = document.getElementById("yearBorn").value;
            var ok=true;
            if (st == "") {
                alert("You must enter an age(year)");
                document.getElementById("yearBorn").focus();
                ok=false;
            }
            if (isNaN(st)) {
                alert("Error, you must enter an apropriate age (year)");
               document.getElementById("yearBorn").focus();
             ok=false;
            }
            else {

                if (Number(st) < 1930 || Number(st) > 2012) {
                    alert("Enter an valid year");
                    document.getElementById("yearBorn").focus();
                   ok=false;
                }
            }
            return ok;
        }

        function PhoneIsValid() {

            var st = document.getElementById("Select1").options.value + "-" + document.getElementById("tel").value;
            var st2 = document.getElementById("tel").value;
    var ok=true;
            if (isNaN(st2)) {
                alert("Error: you must enter numbers only in phone!!");
                document.getElementById("tel").focus();
               ok=false;
            }

            if (st2.length != 7) {
                alert("You must enter a 7 digit number phone number");
                document.getElementById("tel").focus();
              ok=false;
            }

            if (st2 == "") {
                alert("You must enter a phone number");
                 document.getElementById("tel").focus();
               ok=true;
            }


            return ok;
        }

        function EmailIsValid() {

            var stEmail = document.getElementById("email").value;
            var ok=true;
            if (stEmail == "") {
                alert("You must enter an email");
                 document.getElementById("email").focus();
                ok=true;
            }
            else {
                if (stEmail.indexOf("@") < 0) {
                    alert("Email must have @");
                   document.getElementById("email").focus();
                   ok=false;
                }
                if (stEmail.indexOf(".") < 0) {
                    alert("Email must have (.)");
                    document.getElementById("email").focus();
                }
            }
            return ok;
        }

        function isvalid()
        {
            if ( FirstNameIsValid() && LastNameIsValid() && PhoneIsValid() && EmailIsValid() && AgeIsValid();
                return true;
                return false;
        }
        function submitForm()
        {
        if (isvalid())
            form1.submit();
        }
    </script>