// create the basic controls
var searchControl = new GSearchControl();
var sOptions = new GsearcherOptions();
var webSearch = new GwebSearch();

// set the results to open automatically
sOptions.setExpandMode( GSearchControl.EXPAND_MODE_OPEN );

// restrict the results to visegradtours.hu
webSearch.setSiteRestriction('www.visegradtours.hu');

// add the search control
searchControl.addSearcher( webSearch, sOptions );