function chooseStyle (newstyle){
  var expdate = new Date();
  expdate.setTime(expdate.getTime() + (1000*3600*24*365));
  document.cookie = 'style=' + newstyle + '; expires=' + expdate.toGMTString() + '; path=/';
 	self.location = self.location;
}

if(document.cookie.indexOf('style=1')>=0) 
  	document.write('<link rel="stylesheet" type="text/css" href="css/large.css">\n');
else 
	document.write('<link rel="stylesheet" type="text/css" href="css/medium.css">\n');