//defer the instantiation of Lightbox. Call when the page has finished loading.
init = function(){
   //creating a data source object
  var dataSource = {
	 	photo1:{url:"day1/images/0027.jpg"},
	 	photo2:{url:"day1/images/0034.jpg"},
	 	photo3:{url:"day1/images/0035.jpg"},
	 	photo4:{url:"day1/images/0038.jpg"},
	 	photo5:{url:"day1/images/0040.jpg"},
		photo6:{url:"day1/images/0044.jpg"},
		photo7:{url:"day1/images/0046.jpg"},
		photo8:{url:"day1/images/0056.jpg"},
		photo9:{url:"day1/images/0058.jpg"},
		photo10:{url:"day1/images/0061.jpg"},
		photo11:{url:"day1/images/0080.jpg"},
		photo12:{url:"day1/images/0091.jpg"},
		photo13:{url:"day1/images/0116.jpg"},
		photo14:{url:"day1/images/0122.jpg"},
		photo15:{url:"day1/images/0127.jpg"},
		photo16:{url:"day1/images/0135.jpg"},
		photo17:{url:"day1/images/0143.jpg"},
		photo18:{url:"day1/images/0170.jpg"},
		photo19:{url:"day1/images/0211.jpg"},
		photo20:{url:"day1/images/0212.jpg"},
		photo21:{url:"day1/images/0215.jpg"},
		photo22:{url:"day1/images/0218.jpg"},
		photo23:{url:"day1/images/0238.jpg"},
		photo24:{url:"day1/images/0239.jpg"},
		photo25:{url:"day1/images/0264.jpg"},
		photo26:{url:"day1/images/0266.jpg"},
		photo27:{url:"day1/images/0274.jpg"},
		photo28:{url:"day1/images/0290.jpg"},
		photo29:{url:"day1/images/0337.jpg"},
		photo30:{url:"day1/images/0343.jpg"},
		photo31:{url:"day1/images/0347.jpg"},
		photo32:{url:"day1/images/0364.jpg"},
		photo33:{url:"day1/images/0401.jpg"},
		photo34:{url:"day1/images/0405.jpg"},
		photo35:{url:"day1/images/0406.jpg"},
		photo36:{url:"day1/images/0423.jpg"},
		photo37:{url:"day1/images/0430.jpg"},
		photo38:{url:"day1/images/0439.jpg"},
		photo39:{url:"day1/images/0446.jpg"},
		photo40:{url:"day1/images/0454.jpg"},
		photo41:{url:"day1/images/0458.jpg"},
		photo42:{url:"day1/images/0466.jpg"},
		photo43:{url:"day1/images/0470.jpg"},
		photo44:{url:"day1/images/0476.jpg"},
		photo45:{url:"day1/images/0489.jpg"},
		photo46:{url:"day1/images/0498.jpg"},
		photo47:{url:"day1/images/0506.jpg"},
		photo48:{url:"day1/images/0511.jpg"},
		photo49:{url:"day1/images/0513.jpg"},
		photo50:{url:"day1/images/0529.jpg"},
		photo51:{url:"day1/images/0537.jpg"},
		photo52:{url:"day1/images/0543.jpg"},
		photo53:{url:"day1/images/0557.jpg"},
		photo54:{url:"day1/images/0572.jpg"},
		photo55:{url:"day1/images/0574.jpg"},
		photo56:{url:"day1/images/0582.jpg"},
		photo57:{url:"day1/images/0584.jpg"},
		photo58:{url:"day1/images/0598.jpg"},
		photo59:{url:"day1/images/0601.jpg"},
		photo60:{url:"day1/images/0617.jpg"},
		photo61:{url:"day1/images/0621.jpg"},
		photo62:{url:"day1/images/0628.jpg"},
		photo63:{url:"day1/images/0632.jpg"},
		photo64:{url:"day1/images/0637.jpg"},
		photo65:{url:"day1/images/0642.jpg"},
		photo66:{url:"day1/images/0655.jpg"},
		photo67:{url:"day1/images/0662.jpg"},
		photo68:{url:"day1/images/0664.jpg"},
		photo69:{url:"day1/images/0668.jpg"},
		photo70:{url:"day1/images/0670.jpg"},
		photo71:{url:"day1/images/0671.jpg"},
		photo72:{url:"day1/images/0673.jpg"},
		photo73:{url:"day1/images/0676.jpg"},
		photo74:{url:"day1/images/0687.jpg"},
		photo75:{url:"day1/images/0692.jpg"},
		photo76:{url:"day1/images/0716.jpg"},
		photo77:{url:"day2/images/0736.jpg"},
		photo78:{url:"day2/images/0744.jpg"},
		photo79:{url:"day2/images/0749.jpg"},
		photo80:{url:"day2/images/0771.jpg"},
		photo81:{url:"day2/images/0788.jpg"},
		photo82:{url:"day2/images/0800.jpg"},
		photo83:{url:"day2/images/0811.jpg"},
		photo84:{url:"day2/images/0819.jpg"},
		photo85:{url:"day2/images/0829.jpg"},
		photo86:{url:"day2/images/0858.jpg"},
		photo87:{url:"day2/images/0861.jpg"},
		photo88:{url:"day2/iamges/0885.jpg"},
		photo89:{url:"day2/images/0927.jpg"},
		photo90:{url:"day2/images/0939.jpg"},
		photo91:{url:"day2/images/0951.jpg"},
		photo92:{url:"day2/images/0958.jpg"},
		photo93:{url:"day2/images/0961.jpg"},
		photo94:{url:"day2/images/0970.jpg"},
		photo95:{url:"day2/images/0975.jpg"},
		photo96:{url:"day2/images/1004.jpg"},
		photo97:{url:"day2/images/1015.jpg"},
		photo98:{url:"day2/images/1019.jpg"},
		photo99:{url:"day3/images/1021.jpg"},
		photo100:{url:"day2/images/1027.jpg"},
		photo101:{url:"day2/images/1034.jpg"},
		photo102:{url:"day2/images/1051.jpg"},
		photo103:{url:"day2/images/1054.jpg"},
		photo104:{url:"day2/images/1056.jpg"},
		photo105:{url:"day2/images/1059.jpg"},
		photo106:{url:"day2/images/1066.jpg"},
		photo107:{url:"day2/images/1073.jpg"},
		photo108:{url:"day2/images/1075.jpg"},
		photo109:{url:"day2/images/1078.jpg"},
		photo110:{url:"day2/images/1081.jpg"},
		photo111:{url:"day2/images/1092.jpg"},
		photo112:{url:"day2/images/1095.jpg"},
		photo113:{url:"day2/images/1105.jpg"},
		photo114:{url:"day2/images/1115.jpg"},
		photo115:{url:"day2/images/1123.jpg"},
		photo116:{url:"day2/images/1153.jpg"},
		photo117:{url:"day2/images/1165.jpg"},
		photo118:{url:"day2/images/1174.jpg"},
		photo119:{url:"day2/images/1178.jpg"},
		photo120:{url:"day2/images/1183.jpg"},
		photo121:{url:"day2/images/1187.jpg"},
		photo122:{url:"day2/images/1188.jpg"}
  };

  //Instantiate a Lightbox object
  var lightbox = new YAHOO.com.thecodecentral.Lightbox({
    imageBase:'http://wwwdev.wharton.upenn.edu/alumni/inc/gallery/lightbox', 
    dataSource: dataSource
  });
}
YAHOO.util.Event.on(window, 'load', init);