1 files changed, 21 insertions, 0 deletions
diff --git a/ui/safe-blur.js b/ui/safe-blur.js
new file mode 100644
index 000000000..525878268
--- /dev/null
+++ b/ui/safe-blur.js
@@ -0,0 +1,21 @@
+( function( factory ) {
+	if ( typeof define === "function" && define.amd ) {
+
+		// AMD. Register as an anonymous module.
+		define( [ "jquery", "./version" ], factory );
+	} else {
+
+		// Browser globals
+		factory( jQuery );
+	}
+} ( function( $ ) {
+return $.ui.safeBlur = function( element ) {
+
+	// Support: IE9 - 10 only
+	// If the <body> is blurred, IE will switch windows, see #9420
+	if ( element && element.nodeName.toLowerCase() !== "body" ) {
+		$( element ).trigger( "blur" );
+	}
+};
+
+} ) );