(function(){
	shuffle = function(array) {
		var i = array.length;
		while(i){
			var j = Math.floor(Math.random()*i);
			var t = array[--i];
			array[i] = array[j];
			array[j] = t;
		}
		return array;
	}
	
	var ads = [{"src":"http:\/\/www.ucchari.com\/bn\/dgbn_160600_01.jpg","alt":"2\u30b7\u30e7\u30c3\u30c8\u30c1\u30e3\u30c3\u30c8\u306f\u30c7\u30b8\u30ab\u30d5\u30a7","target":"_blank","weight":1,"url":"http:\/\/ad.heypo.com\/click\/269"}];
	if (ads.length < 1) return;
	
	var tmp = [];
	for (var i = 0; i < ads.length; i++) {
		for (var j = 0; j < ads[i].weight; j++) {
			tmp.push(ads[i]);
		}
	}
	
	var ad = shuffle(tmp).shift();
	document.getElementById('ad-zone-25').innerHTML = '<a href="' + ad.url +'" target="' + ad.target +'"><img src="' + ad.src +'" alt="' + ad.alt +'" /></a>';
})();