tmt_css_Mac = "http://logit42.com/wp-content/themes/starkers/mac_master.css";
tmt_css_Win = "http://logit42.com/wp-content/themes/starkers/pc_master.css";
if((navigator.appVersion.indexOf("Mac")!= -1)){
  document.write("<link rel='stylesheet' href='" + tmt_css_Mac + "' type='text/css'>");
}
else{
  document.write("<link rel='stylesheet' href='" + tmt_css_Win + "' type='text/css'>");
}