$(function() {  
    // select the thumbnails and make them trigger our overlay
    $("#gallery_promo a").overlay({

    	// each trigger uses the same overlay with the id "gallery"
    	target: '#gallery',

    	// optional exposing effect
    	expose: '#f1f1f1'

    // let the gallery plugin do its magic!
    }).gallery({

    	// the plugin accepts its own set of configuration options
    	speed: 800
    });
    
 
});