var searchText = "Rechercher ...";

$(document).ready(function () {

    $("#SRSB input").attr("value", searchText);

    $("#SRSB input").bind('focus', function () {
        if ($("#SRSB input").attr("value") == searchText)
        {
            $("#SRSB input").attr("value", "");
        }
    });

    $("#SRSB input").bind('blur', function () {
        if ($("#SRSB input").attr("value") == "") {
            $("#SRSB input").attr("value", searchText);
        }
    });

});