Maintain a session from json data

Maintain a session from json data

I need a session to create in window load function and can use that session to pass as a parameter to login.php file or is there any alternate maintain a session and use it as globally?

$(document).ready(function(){
$('#login_btn').click(function(){
var rest_username = $('#email_login').val();
var rest_password = $('#pwd_login').val();
$.post('Login.php',{Email:rest_username, Password:rest_password, BrowserName:browserName, OpertingSystem:OSName},function(data){
         if(data.value){
          alert('success');
         }else if(data.Message="Password Changed"){
          alert('Password Changed!');
          $('#pwd_login').val('');
         }else if(data.Message="Wrong Password"){
          alert('Wrong Password!');
          $('#pwd_login').val('');
         }else if(data.Message="Account Deleted"){
          alert('Your Account has been deleted!');
         }else if(data.Message="Wrong Username"){
          alert('Wrong Username!');
          $('#email_login').val('');
         }
         },'json');
});
});

$(window).load(function(){
$.post("sample.php",function(data){
var token = data.Token;
alert(token);
$.session(token);
},'json');
});