Allows to detect common mobile platforms

Mobile UA detection

isAndroid =  function(){
    return navigator.userAgent.toLowerCase().indexOf("android") > -1;
}
isIOS = function(){
    return navigator.userAgent.match( /(iPod|iPhone|iPad)/ );
}
isWP = function(){
    return navigator.userAgent.indexOf("Windows Phone OS") > -1;
}
isBB = function(){
    return navigator.userAgent.match( /(PlayBook|BB10)/ );
}
isFOS = function(){
    return navigator.userAgent.match( /(Mobile)/ ) &&  navigator.userAgent.match( /(Firefox)/ );
}

isMobile = function(){
    return isAndroid() || isIOS() || isWP() || isBB() || isFOS();
}