function changeBackground(){
	var bgd = bgds[current_bgd++];
	if(current_bgd>=bgds.length) current_bgd = 0;
	$("img#background").attr("src",bgd);
}

$(document).ready(function() {
  	var cache = [];
	for(var i = bgds.length; i--;) {
      var cacheImage = document.createElement('img');
      cacheImage.src = bgds[i];
      cache.push(cacheImage);
    }

	$(document).everyTime(10000, function(i) {
		changeBackground();
	});
});