// 
if (is_ie6) {
  document.write('<'+'link rel="stylesheet" type="text/css" href="assets/templates/default/css/default_IE6.css" />');
}
// 
else if (is_ie6up) {
  document.write('<'+'link rel="stylesheet" type="text/css" href="assets/templates/default/css/default.css" />');
}
// 
else if (is_nav) {
  document.write('<'+'link rel="stylesheet" type="text/css" href="assets/templates/default/global/styles/default_moz.css" />');
}
// 
else {
  document.write('<'+'link rel="stylesheet" type="text/css" href="assets/templates/default/global/styles/default_moz.css" />');
}