Writing Something

var deviceIphone = "iphone";
var deviceIpod = "ipod";
var deviceS60 = "series60";
var deviceSymbian = "symbian";
var deviceAndroid = "android";
var deviceWinMob = "windows ce";
 
var uagent = navigator.userAgent.toLowerCase();
 
function DetectMobile() {
    if (uagent.search(deviceIphone) > -1
        || uagent.search(deviceIpod) > -1
        || uagent.search(deviceS60) > -1
        || uagent.search(deviceSymbian) > -1
        || uagent.search(deviceWinMob) > -1
        || uagent.search(deviceAndroid) > -1)
        return true;
    else
        return false;
}
 
if (DetectMobile()) {
    alert("mobile browserdan bir ziyaret...");
}