if (screen.width == 640) {
document.write('<link rel="stylesheet" type="text/css" href="css/640.css">');
}
if (screen.width == 800) {
document.write('<link rel="stylesheet" type="text/css" href="css/800.css">');
}
if (screen.width == 1024) {
document.write('<link rel="stylesheet" type="text/css" href="css/lions.css">');
}