Logout from a website using HTTP Authorization - Bookmarklet

HTTPAuthLogout.js

/**
 * Logout from a website using HTTP Authorization.
 *
 * Inspired by http://stackoverflow.com/a/14329930/1242333
 *
 */
(function(window,location,command,outcome,undefined){
    function done(e) {
        if ( !e || this.readyState == 4 ) {
            outcome && location.reload();
            outcome = undefined;
        }
    }

    // IE has a simple solution for it - API:
    try { if ( outcome = document.execCommand(command) ) done(); }catch(e){}

    // Other browsers need a larger solution - AJAX call with special user name - 'logout'.
    if (!outcome) {
        // Let's create an xmlhttp object
        (function(x){
            if (x) {
                // the reason we use "random" value for password is
                // that browsers cache requests. changing
                // password effectively behaves like cache-busing.
                x.open("HEAD", location.href, true, command, Math.random()+'');
                x.onreadystatechange = done;
                x.send("");
                outcome = true;
            }
            else {
                alert("Your browser doesn't support log out functionality. Close all windows and restart the browser.");
            }
        }(window.XMLHttpRequest ? new window.XMLHttpRequest() : ( window.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP") : undefined )));
    }
}(this,location,"ClearAuthenticationCache"));

HTTPAuthLogout.min.js

(function(c,d,e,b,f){function g(a){a&&4!=this.readyState||(b&&d.reload(),b=f)}try{(b=document.execCommand(e))&&g()}catch(h){}b||function(a){a?(a.open('HEAD',d.href,!0,e,Math.random()+''),a.onreadystatechange=g,a.send(''),b=!0):alert('Your browser doesn\'t support log out functionality. Close all windows and restart the browser.')}(c.XMLHttpRequest?new c.XMLHttpRequest:c.ActiveXObject?new ActiveXObject('Microsoft.XMLHTTP'):f)}(this,location,'ClearAuthenticationCache'));