diff -r 000000000000 -r d970ebf37754 wp/wp-includes/js/wp-auth-check.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/js/wp-auth-check.js	Wed Nov 06 03:21:17 2013 +0000
@@ -0,0 +1,106 @@
+// Interim login dialog
+(function($){
+	var wrap, check, next;
+
+	function show() {
+		var parent = $('#wp-auth-check'), form = $('#wp-auth-check-form'), noframe = wrap.find('.wp-auth-fallback-expired'), frame, loaded = false;
+
+		if ( form.length ) {
+			// Add unload confirmation to counter (frame-busting) JS redirects
+			$(window).on( 'beforeunload.wp-auth-check', function(e) {
+				e.originalEvent.returnValue = window.authcheckL10n.beforeunload;
+			});
+
+			frame = $('<iframe id="wp-auth-check-frame" frameborder="0">').attr( 'title', noframe.text() );
+			frame.load( function(e) {
+				var height, body;
+
+				loaded = true;
+
+				try {
+					body = $(this).contents().find('body');
+					height = body.height();
+				} catch(e) {
+					wrap.addClass('fallback');
+					parent.css( 'max-height', '' );
+					form.remove();
+					noframe.focus();
+					return;
+				}
+
+				if ( height ) {
+					if ( body && body.hasClass('interim-login-success') )
+						hide();
+					else
+						parent.css( 'max-height', height + 40 + 'px' );
+				} else if ( ! body || ! body.length ) {
+					// Catch "silent" iframe origin exceptions in WebKit after another page is loaded in the iframe
+					wrap.addClass('fallback');
+					parent.css( 'max-height', '' );
+					form.remove();
+					noframe.focus();
+				}
+			}).attr( 'src', form.data('src') );
+
+			$('#wp-auth-check-form').append( frame );
+		}
+
+		wrap.removeClass('hidden');
+
+		if ( frame ) {
+			frame.focus();
+			// WebKit doesn't throw an error if the iframe fails to load because of "X-Frame-Options: DENY" header.
+			// Wait for 10 sec. and switch to the fallback text.
+			setTimeout( function() {
+				if ( ! loaded ) {
+					wrap.addClass('fallback');
+					form.remove();
+					noframe.focus();
+				}
+			}, 10000 );
+		} else {
+			noframe.focus();
+		}
+	}
+
+	function hide() {
+		$(window).off( 'beforeunload.wp-auth-check' );
+
+		// When on the Edit Post screen, speed up heartbeat after the user logs in to quickly refresh nonces
+		if ( typeof adminpage != 'undefined' && ( adminpage == 'post-php' || adminpage == 'post-new-php' )
+			 && typeof wp != 'undefined' && wp.heartbeat ) {
+
+			wp.heartbeat.interval( 'fast', 1 );
+		}
+
+		wrap.fadeOut( 200, function() {
+			wrap.addClass('hidden').css('display', '');
+			$('#wp-auth-check-frame').remove();
+		});
+	}
+
+	function schedule() {
+		var interval = parseInt( window.authcheckL10n.interval, 10 ) || 180; // in seconds, default 3 min.
+		next = ( new Date() ).getTime() + ( interval * 1000 );
+	}
+
+	$( document ).on( 'heartbeat-tick.wp-auth-check', function( e, data ) {
+		if ( 'wp-auth-check' in data ) {
+			schedule();
+			if ( ! data['wp-auth-check'] && wrap.hasClass('hidden') )
+				show();
+			else if ( data['wp-auth-check'] && ! wrap.hasClass('hidden') )
+				hide();
+		}
+	}).on( 'heartbeat-send.wp-auth-check', function( e, data ) {
+		if ( ( new Date() ).getTime() > next )
+			data['wp-auth-check'] = true;
+	}).ready( function() {
+		schedule();
+		wrap = $('#wp-auth-check-wrap');
+		wrap.find('.wp-auth-check-close').on( 'click', function(e) {
+			hide();
+		});
+	});
+
+}(jQuery));