function classListsFilter( baseURL, imgLoader ) {
    if ( !jQuery )return true;
    var CLASSLISTS_MAIN_CONTENT_ID = 'maincontent-design';
    var classListsURL = baseURL + '/' + $('#classIdentifier').val() + '/' + $('#sortMethod').val() + '/' + $('#sortOrder').val() + '/ajax';
    $('#'+CLASSLISTS_MAIN_CONTENT_ID)
    	.html('<p style="text-align:center;padding-top:4em;"><img src="' + imgLoader + '" alt="Loading..." /></p>')
    	.load(classListsURL,function(){
    });
    return false;
}