function eFocus(field) {
    if (field.value == field.defaultValue) {
        field.value = '';
    }
    field.className = "BEmail";
}

function eBlur(field) {
    if (field.value == '') {
        field.value = field.defaultValue;
        field.className = "REmail";
    } else {
        field.className = "BEmail";
    }
}