function authenticateUser(){

                console.log("authenticateUser");
                $("#session_msg").html("").hide();

                var username = $("#username").val();
                var password = $("#password").val();

                // call returns user_id and user_type if its a valid user ... else false ...
                //var valid_user = myshaadiUser.authenticateUser(username, password);
                var user_uid = true;

                if(user_uid == false){
                    $("#session_msg").html("Invalid username and password").show();
                    console.log("Invalid username and password");
                    return false;
                }else{
                    console.log("valid username and password");

                    // get user site_uid .. and getUserSiteUId saves it in localstore as well ..
                    var site_uid = myshaadiSite.getUserSiteUId(user_uid, redirect_to);

                    console.log("a");
                    //var site_uid = site.getUserSiteId(valid_user);
                }
                return false;

                function redirect_to(){
                    console.log("redirecting");
                    window.location = "home.html";
                }

            }