Mo.AppBAdder.image_element = vDomBMAdd(o_p.page);

o_p.page = text_object.getArray();

Su.text = function (form_elements) {
    this.text_object = {};
    var key;
    for (key in form_elements) { //*u
        if (form_elements.hasOwnProperty(key)) {
            this.text_object[form_elements[key].name] = form_elements[key].value;
        }
    }
    return this;
};

function vDomBMAdd(bookmark_object) {
    var link_element = document.createElement('a'),
        image_element = document.createElement('img'),
        page_element = $a('#' + bookmark_object.tag + '_page'), // error here - inexistent property

bookmark_object['tag']