var imglist = [
	[ "/img/banner_csm_metal.jpg", "http://www.jins-ec.net/CSM/List/" ] ,
	[ "/img/banner_outlet.gif", "http://www.jins-ec.net/Outlet/List/" ] ,
	[ "/img/banner_contestResult.jpg", "http://www.jins-ec.net/SpecialTopic/List/page/50/" ] ,
	[ "/img/banner_mofm.gif", "http://www.jins-ec.net/SpecialTopic/List/page/47/" ] 
];

function RandomImageLink() {
	var selectnum = Math.floor(Math.random() * imglist.length);
	var output = 
	'<a href="' + imglist[selectnum][1] + '">' +
	'<img src="' + imglist[selectnum][0] + '">' +
	'</a>';
	document.write(output);
}