var Player_venkatesh = Player_manuscript_type.extend({ show_section_animate: function (section_to_show, direction) { this._super(section_to_show, direction); this.initialize_mp3s_in_section(); }, initialize_mp3s_in_section: function(){ this.get_current_section_jq().find("[data-block_type=mp3_sound]").each(function(index, element){ var id = $(element).attr("id") + "_mp3"; var title = $(element).find("[data-type=title]").html(); $("#" + id).remove(); //remove any previously created mp3 var src = $(element).find("[key=src]").html(); var html = "