if (navigator.appVersion.indexOf("MSIE 7.0") != -1)
{
    document.createStyleSheet("././css/style_ie7.css", 1);
}
else
{
    if (navigator.userAgent.indexOf("Firefox") != -1)
    {
        document.write('<link rel="stylesheet" type="text/css" href="././css/style_fire.css">');
    }
    else
    {
        if (navigator.userAgent.indexOf("Chrome") != -1)
        {
            document.write('<link rel="stylesheet" type="text/css" href="././css/style_fire.css">');
        }
        else
        {
            if (navigator.userAgent.indexOf("Safari") != -1)
            {
                document.write('<link rel="stylesheet" type="text/css" href="././css/style_fire.css">');
            }
            else
                if (navigator.userAgent.indexOf("MSIE 8.0") != -1)
                {
                    document.write('<link rel="stylesheet" type="text/css" href="././css/style_ie8.css">');
                }
                else
                {
                    document.createStyleSheet("././css/style_ie6.css", 1);
                }
        }
    }
}