using part of gentelella

docs/gentelella/vendors/jquery/src/css/hiddenVisibleSelectors.js

@@ -0,0 +1,18 @@
+define( [
+	"../core",
+	"../selector"
+], function( jQuery ) {
+
+jQuery.expr.filters.hidden = function( elem ) {
+	return !jQuery.expr.filters.visible( elem );
+};
+jQuery.expr.filters.visible = function( elem ) {
+
+	// Support: Opera <= 12.12
+	// Opera reports offsetWidths and offsetHeights less than zero on some elements
+	// Use OR instead of AND as the element is not visible if either is true
+	// See tickets #10406 and #13132
+	return elem.offsetWidth > 0 || elem.offsetHeight > 0 || elem.getClientRects().length > 0;
+};
+
+} );