Event.observe(window,"load",init);

function init(){
		if(navigator.userAgent.indexOf("Win") != -1){
			var css = new Element('link', {rel:'stylesheet', type:'text/css', href : 'http://anfan.co.jp/test/wp-content/themes/anfan/css/win.css'});
			
			var head = $$('head')[0];
			
			head.insert(css);
		}
}