Index: test/unit/event.js
===================================================================
--- test/unit/event.js	(revision 3484)
+++ test/unit/event.js	(working copy)
@@ -116,7 +116,7 @@
 });
 
 test("trigger(event, [data], [fn])", function() {
-	expect(40);
+	expect(41);
 
 	var handler = function(event, a, b, c) {
 		equals( event.type, "click", "check passed data" );
@@ -169,6 +169,16 @@
 	// Trigger only the handlers (no native) and extra fn, with external event obj
 	// Triggers 9
 	equals( $("#firstp").triggerHandler("click", [eventObj, 1, "2", "abc"], handler), "test", "Verify handler response" );
+	
+	var pass = true;
+	try {
+		$('input:first')
+			.hide()
+			.trigger('focus');
+	} catch(e) {
+		pass = false;
+	}
+	ok( pass, "Trigger focus on hidden element" );
 });
 
 test("toggle(Function, Function)", function() {
Index: src/event.js
===================================================================
--- src/event.js	(revision 3484)
+++ src/event.js	(working copy)
@@ -177,7 +177,10 @@
 			// Trigger the native events (except for clicks on links)
 			if ( fn && donative !== false && val !== false && !(jQuery.nodeName(element, 'a') && type == "click") ) {
 				this.triggered = true;
-				element[ type ]();
+				try {
+					element[ type ]();
+				// prevent IE from throwing an error for some hidden elements
+				} catch (e) {}
 			}
 
 			this.triggered = false;