//browser check
var os, ua = navigator.userAgent;
if (ua.match(/Win(dows )?NT 6\.0/)) {//for Vista
if( navigator.appName.charAt(0)=="M"){
document.write("");
}
else{
document.write("");
}
}
else if (ua.match(/Mac|PPC/)) {// for Mac
if( navigator.appVersion.indexOf("Safari")!=-1){
document.write("");
}
else{
document.write("");
}
}
else {
if( navigator.appName.charAt(0)=="M"){// for XP
document.write("");
}
else{
document.write("");
}
}