var browserName=navigator.appName; 
if (browserName=="Microsoft Internet Explorer")
{ 
document.write('<link rel="stylesheet" href="styles/iefsn-pref1024x768.css" type="text/css" title="prefer">')
document.write('<link rel="alternate stylesheet" href="styles/iefsn-aut1024x768.css" type="text/css" title="automne">')
document.write('<link rel="alternate stylesheet" href="styles/iefsn-hiv1024x768.css" type="text/css" title="hiver">')
document.write('<link rel="alternate stylesheet" href="styles/iefsn-pri1024x768.css" type="text/css" title="printemps">')
document.write('<link rel="alternate stylesheet" href="styles/iefsn-ete1024x768.css" type="text/css" title="ete">')
}
else {
document.write('<link rel="stylesheet" href="styles/nsfsn-pref1024x768.css" type="text/css" title="prefer">')
document.write('<link rel="alternate stylesheet" href="styles/nsfsn-aut1024x768.css" type="text/css" title="automne">')
document.write('<link rel="alternate stylesheet" href="styles/nsfsn-hiv1024x768.css" type="text/css" title="hiver">')
document.write('<link rel="alternate stylesheet" href="styles/nsfsn-pri1024x768.css" type="text/css" title="printemps">')
document.write('<link rel="alternate stylesheet" href="styles/nsfsn-ete1024x768.css" type="text/css" title="ete">')
}