if (browser.mac) {
        if (browser.ie) {
                document.write('<link rel="stylesheet" type="text/css" href="/services/mgi2/library/css/stylesheet_mac_ie.css">        ');
        }
        else {
                document.write('<link rel="stylesheet" type="text/css" href="/services/mgi2/library/css/stylesheet_mac.css">');
        }       
} else {
        if(browser.ns) { 
                document.write('<link rel="stylesheet" type="text/css" href="/services/mgi2/library/css/stylesheet_ns.css">');
        } else { 
                document.write('<link rel="stylesheet" type="text/css" href="/services/mgi2/library/css/stylesheet.css">');
        }
}