function validPhone(form) {
    if (form.country.value.length != 3) {
        form.country.focus();
        alert('Please enter a valid phone number.');
        return false;
    }

    if (form.area.value.length != 3) {
        form.area.focus();
        alert('Please enter a valid phone number.');
        return false;
    }

    if (form.phone.value.length != 4) {
        form.phone.focus();
        alert('Please enter a valid phone number.');
        return false;
    }

    return true;
}


var my_elements = ['dslNumber1', 'dslNumber2', 'dslNumber3'];

function jumpTo(my_element, e) {
    var keyNum = e.which ? e.which : e.keyCode;

    var elementID = my_elements.indexOf(my_element.name);
    var goToElementID;

    if (my_element.value.length == my_element.maxLength)
        goToElementID = ++elementID;
    if ((keyNum == 8) && !(my_element.value.length))
        goToElementID = --elementID;

    if (my_elements[goToElementID])
    {
        var goToElement = document.getElementsByName(my_elements[goToElementID]);
        goToElement = goToElement[0];
        goToElement.focus();
    }

    return true;
}

function isNum(e) {
    var keyNum = e.which ? e.which : e.keyCode;
    if ((keyNum != 8) && (keyNum != 13) && ((keyNum < 48) || (keyNum > 57)) && (keyNum != 46) && (keyNum != 9)) return false;
}