//A tag  id="random_ + 0からの連番" 
//img tag  id="img + 0からの連番" 

//["img.alt","img.src","a.href"]

var bannerimg_0 = new Array(
["loufas","/common/img/banner/loufas.gif","http://www.loufas.co.jp/"],
["ASIAGRAPH","/common/img/banner/asiagraph.jpg","http://www.asiagraph.jp/"],
["Sony Digital","/common/img/banner/sonydigital.jpg","http://sonydes.jp/"] );


var bannerimg_1 = new Array(
["NODE","/common/img/banner/node.gif","http://www.node.ne.jp/"],
["numero","/common/img/banner/numero.jpg","http://numero.fusosha.co.jp/"],
["NY Art Beat","/common/img/banner/NYAB.png","http://www.nyartbeat.com/"],
["Tokyo Art Beat","/common/img/banner/tab_en.png","http://www.tokyoartbeat.com/"],
["art collector","/common/img/banner/artcollector.jpg","http://www.tomosha.com/collector/index.html"],
["CINRA","/common/img/banner/cinra.jpg","http://www.cinra.net/"],
["Mutal Art","/common/img/banner/mutualart_banner.jpg","http://www.mutualart.com/"] );


var bannerimg_2 = new Array(
["AAC","/common/img/banner/gekkangallery.jpg","http://www.asianartcity.com/"],
["art_icle","/common/img/banner/art-icle.jpg","http://www.art-icle.jp/"],
["artit","/common/img/banner/101_artit_B.gif","http://www.art-it.jp/"],
["BT","/common/img/banner/BTbanner.gif","http://www.bijutsu.co.jp/bt/"],
["est-ouest","/common/img/banner/est-ouest.jpg","http://www.est-ouest.co.jp/"],
["gekkan gallery","/common/img/banner/gekkangallery.jpg","http://www.asianartcity.com/"],
["loftwork","/common/img/banner/loftwork_banner.jpg","http://www.loftwork.com/"],
["art-issue","/common/img/banner/issue-101tokyo.jpg","http://www.art-issue.com/"]);


//バナーの数を調べます。
var figure = bannerimg_0.length;

for (i=0; i<100; i++) //　100はシャッフルする回数
{
	n1 = Math.floor(Math.random() * figure);
	n2 = Math.floor(Math.random() * figure);
	m = bannerimg_0[n1]
	bannerimg_0[n1] = bannerimg_0[n2];
	bannerimg_0[n2] = m;
}

//バナーの数を調べます。
var figure = bannerimg_1.length;

for (i=0; i<100; i++) //　100はシャッフルする回数
{
	n1 = Math.floor(Math.random() * figure);
	n2 = Math.floor(Math.random() * figure);
	m = bannerimg_1[n1]
	bannerimg_1[n1] = bannerimg_1[n2];
	bannerimg_1[n2] = m;
}

//バナーの数を調べます。
var figure = bannerimg_2.length;

for (i=0; i<100; i++) //　100はシャッフルする回数
{
	n1 = Math.floor(Math.random() * figure);
	n2 = Math.floor(Math.random() * figure);
	m = bannerimg_2[n1]
	bannerimg_2[n1] = bannerimg_2[n2];
	bannerimg_2[n2] = m;
}

function putbanner(cut)
{
	linktag = document.getElementById("random_" + cut);
	//imgtag = document.getElementById("img" + cut);
	imgtag = linktag.getElementsByTagName("img")[0];
	if(cut == 0)
	{
		linktag.href = bannerimg_0[cut][2];
		imgtag.src = bannerimg_0[cut][1];
		imgtag.alt = bannerimg_0[cut][0];
	}
	if(cut == 1)
	{
		linktag.href = bannerimg_1[cut][2];
		imgtag.src = bannerimg_1[cut][1];
		imgtag.alt = bannerimg_1[cut][0];
		if(imgtag.alt == "Tokyo Art Beat")
		{
			nowURL = location.href;
			if(nowURL.indexOf("/jp/") >= 0)
			{
				imgtag.src = "/common/img/banner/tab_jp.png";
			}
		}
	}
	if(cut == 2)
	{
		linktag.href = bannerimg_2[cut][2];
		imgtag.src = bannerimg_2[cut][1];
		imgtag.alt = bannerimg_2[cut][0];
	}
}

putbanner(0);
putbanner(1);
putbanner(2);