$(document).ready(function () {

    var clearMePrevious = "";

    // clear input on focus
    $(".clearMeFocus").focus(function () {
        clearMePrevious = $(this).val();
        $(this).val('');
    });

    $(".clearMeFocus").blur(function () {
        if ($(this).val() == '')
        $(this).val(''+clearMePrevious);
    });

});