var speechtext = $("#speech").val();

    speechtext = speechtext.replace(/ /g, '');

     var cedula_2 = new String(speechtext);

    var elements = document.getElementsByClassName("index");

    for (var i = 0; i < elements.length; i++) {

        var prueba = elements[i].innerHTML.replace('<span id="MainContent_dt_estudiantes_lblcedula_', '');

        prueba = prueba.replace('style="display:inline-block;width:100px;">', '');

        prueba = prueba.replace('</span>', '');

        prueba = prueba.replace('" ', ',');

        var lista = prueba.split(',');

     

        var cedula = new String(lista[1]);

        window.open(typeof cedula_2, 'window name', 'window settings');

       sometimes are the same values but it doesn't work.

        if (cedula == cedula_2)

        {

            alert(cedula);

            i = 1000;

        }