window.addEvent('domready', function(){

	var number = 0;
	var interval = 10000;
	var images = new Array();
	images[0] = uploadFolder+'backgrounds/bg_cafe.jpg';
	images[1] = uploadFolder+'backgrounds/bg_park_winter1.jpg';
	images[2] = uploadFolder+'backgrounds/bg_park.jpg';
	images[3] = uploadFolder+'backgrounds/bg_grote_markt.jpg';
	images[4] = uploadFolder+'backgrounds/bg_roltrap.jpg';
	images[5] = uploadFolder+'backgrounds/bg_park_winter2.jpg';
	images[6] = uploadFolder+'backgrounds/bg_kleur.jpg';
	images[7] = uploadFolder+'backgrounds/bg_grote_markt_avond.jpg';
	images[8] = uploadFolder+'backgrounds/bg_hm.jpg';
	images[9] = uploadFolder+'backgrounds/bg_park_winter3.jpg';
	images[10] = uploadFolder+'backgrounds/bg_etalage.jpg';
	images[11] = uploadFolder+'backgrounds/bg_ijsbaan_kids.jpg';
	images[12] = uploadFolder+'backgrounds/bg_schoon.jpg';
	images[13] = uploadFolder+'backgrounds/bg_park_winter4.jpg';
	images[14] = uploadFolder+'backgrounds/bg_lampen.jpg';
	images[15] = uploadFolder+'backgrounds/bg_ijsbaan.jpg';

	var preloaded = preloader(images, images.length);

	var cB = function(){
		changeBackground('content_wrapper', images, number);
		if(number == (images.length -1)){
			number = 0;
		}else{
			number++;
		}
	}

	if(preloaded == true){
		cB.periodical(interval);
	}

	Shadowbox.init({
		language: ['nl'],
	    players:  ['img', 'html', 'flv', 'swf'],
	    overlayOpacity: 0.6
	});

	if($('default')){
		$('default').focus();
	}
	
});

function changeBackground(id, images, number){
	if($(id)){
		if(images[number] != ''){
			$(id).setStyle('background', "#646464 url('"+images[number]+"')");
		}
	}

}

function preloader(images, count){

	var i = 0;
	imageObj = new Image();
	// start preloading
	for(i=0; i<=(count-1); i++){
		imageObj.src=images[i];
	}

	return true;
}