var _agent = navigator.userAgent.toLowerCase();
var _win = (_agent.indexOf('win') != -1);
var _mac = (_agent.indexOf('mac') != -1);
var _brover = parseInt(navigator.appVersion);
var _ie = (_agent.indexOf('msie') != -1);
var _ns = ((_agent.indexOf('mozilla') != -1) && (_agent.indexOf('compatible') == -1));
var _nsup = (_ns && (_brover >= 5));
var _opera = (_agent.indexOf('opera') != -1);
var _safari = (_agent.indexOf('safari') != -1);
var _chrome = (_safari && (_agent.indexOf('chrome') != -1));
var _firefox = (_ns && (_agent.indexOf('firefox') != -1));
if(_chrome) {
browser_id = "chrome";
}
else if(_safari) {
browser_id = "safari";
}
else if(_opera) {
browser_id = "opera";
}
else if(_firefox) {
browser_id = "firefox";
}
else if(_nsup) {
browser_id = "nsup";
}
else if(_ns) {
browser_id = "ns";
}
else if(_ie) {
browser_id = "ie";
}
else {
browser_id = "other";
}
if(_win){
switch(browser_id) {
case "chrome":
document.write('');
break;
case "safari":
document.write('');
break;
case "opera":
document.write('');
break;
case "firefox":
document.write('');
break;
case "nsup":
document.write('');
break;
case "ns":
document.write('');
break;
case "ie":
document.write('');
break;
case "other":
document.write('');
break;
}
}
else if(_mac){
switch(browser_id) {
case "chrome":
document.write('');
break;
case "safari":
document.write('');
break;
case "opera":
document.write('');
break;
case "firefox":
document.write('');
break;
case "nsup":
document.write('');
break;
case "ns":
document.write('');
break;
case "ie":
document.write('');
break;
case "other":
document.write('');
break;
}
}