BasicRealm-Logout.html

<script>
//Detect Browser
var isOpera = !!window.opera || navigator.userAgent.indexOf(' OPR/') >= 0;
    // Opera 8.0+ (UA detection to detect Blink/v8-powered Opera)
var isFirefox = typeof InstallTrigger !== 'undefined';   // Firefox 1.0+
var isSafari = Object.prototype.toString.call(window.HTMLElement).indexOf('Constructor') > 0;
    // At least Safari 3+: "[object HTMLElementConstructor]"
var isChrome = !!window.chrome && !isOpera;              // Chrome 1+
var isIE = /*@cc_on!@*/false || !!document.documentMode; // At least IE6
var Host = window.location.host;


//Clear Basic Realm Authentication
if(isIE){
//IE
	document.execCommand("ClearAuthenticationCache");
	window.location = '/';
}
else if(isSafari)
{//Safari. but this works mostly on all browser except chrome
	(function(safeLocation){
		var outcome, u, m = "You should be logged out now.";
		// IE has a simple solution for it - API:
		try { outcome = document.execCommand("ClearAuthenticationCache") }catch(e){}
		// Other browsers need a larger solution - AJAX call with special user name - 'logout'.
		if (!outcome) {
			// Let's create an xmlhttp object
			outcome = (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", safeLocation || location.href, true, "logout", (new Date()).getTime().toString())
					x.send("");
					// x.abort()
					return 1 // this is **speculative** "We are done." 
				} else {
					return
				}
			})(window.XMLHttpRequest ? new window.XMLHttpRequest() : ( window.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP") : u ))	
		}
		if (!outcome) {
			m = "Your browser is too old or too weird to support log out functionality. Close all windows and restart the browser."
		}
		alert(m);
		window.location = '/';
		// return !!outcome
	})(/*if present URI does not return 200 OK for GET, set some other 200 OK location here*/)
}
else{
//Firefox,Chrome
	window.location = 'http://log:out@'+Host+'/';
}
</script>