if (navigator.userAgent.indexOf("Win") >= 0) {
if (vercheck(1,0)) {
document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="/css/win_ie.css">')
} else {
document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="/css/wn_nn.css">')
}
} else {
document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="/css/mac.css">')
}

function vercheck(IEversion,NNversion) {
if ((navigator.appName.indexOf("Microsoft") >= 0)
&&(IEversion != 0)
&&(IEversion <= parseFloat(navigator.appVersion))) {
return true
} else {
if ((navigator.appName.indexOf("Netscape") >= 0)
&&(NNversion != 0)
&&(NNversion <= parseFloat(navigator.appVersion))) {
return true
} else {
return false
}
}
}