bannar=new Array();
bannar[0]='<link rel="stylesheet" type="text/css" href="./css/style1.css" title="style1">';
bannar[1]='<link rel="stylesheet" type="text/css" href="./css/style2.css" title="style2">';
bannar[2]='<link rel="stylesheet" type="text/css" href="./css/style3.css" title="style3">';
bannar[3]='<link rel="stylesheet" type="text/css" href="./css/style4.css" title="style4">';
bannar[4]='<link rel="stylesheet" type="text/css" href="./css/style5.css" title="style5">';
count = Math.floor(Math.random() * bannar.length);
document.write(bannar[count]);