osType=navigator.userAgent;
if(osType.indexOf("Mac")>=0){
myOS="mac";
}
if(osType.indexOf("Win")>=0){
myOS="win";
}
myApp=navigator.appName;
myBrowser=myApp.charAt(0);
if(myBrowser=="M" && myOS=="mac")
{
document.write("");
}
if(myBrowser=="N" && myOS=="mac")
{
document.write("");
}
if(myBrowser=="M" && myOS=="win")
{
document.write("");
}
if(myBrowser=="N" && myOS=="win")
{
document.write("");
}