var win_ie_ver = parseFloat(navigator.appVersion.split("MSIE")[1]);if (win_ie_ver <= 9.0) 

{
document.write('<link rel="stylesheet" type="text/css" href="../includes/main.css" />');
document.write('<meta http-equiv="X-UA-Compatible" content="IE=7" />');
}

else

{
document.write('<link rel="stylesheet" type="text/css" href="../includes/main2.css" />');
}