function runScript(source) {
    if ('function' == typeof source) {
        source = '(' + source + ')();'
    }
    var script = document.createElement('script');
    script.setAttribute("type", "application/javascript");
    script.textContent = source;
    document.body.appendChild(script);
    document.body.removeChild(script);
}

runScript(function() {

JobWindow.getJobAmount = function() {
        var amount = parseInt(this.window.$("#tw_work_menu_value").children("option").filter(":selected").text(), 10);

        return isNaN(amount) ? 1 : amount;
    };

JobWindow.getJobAmountSelector = function() {
        var title = _('How often do you want to start the job?').escapeHTML(),
            cb = this.setJobAmount.bind(this);

    return $(s('<div style="position:relative;top:-50px;left:20px;" title="%1">' +
                '<select id="tw_work_menu_value">' + '      <option value="1">1</option>' + '      <option value="2">2</option>' + '      <option value="3">3</option>' + '      <option value="4">4</option>' + '      <option value="5">5</option>' + '      <option value="6">6</option>' + '      <option value="7">7</option>' + '      <option value="8">8</option>' + '      <option value="9">9</option>' + '    </select> ' +
            '</div>', title)).click(cb).mousewheel(cb);
    };


});