.bind( "keydown.autocomplete", function( event ) {
if ( self.options.disabled || self.element.propAttr( "readOnly" ) ) {
return;
                }

                suppressKeyPress = false;
var keyCode = $.ui.keyCode;
switch( event.keyCode ) {
case keyCode.PAGE_UP:
                    self._move( "previousPage", event );
break;
case keyCode.PAGE_DOWN:
                    self._move( "nextPage", event );
break;
case keyCode.UP:
                    self._move( "previous", event );
// prevent moving cursor to beginning of text field in some browsers
                    event.preventDefault();
break;
case keyCode.DOWN:
                    self._move( "next", event );
// prevent moving cursor to end of text field in some browsers
                    event.preventDefault();
break;
case keyCode.ENTER:
case keyCode.NUMPAD_ENTER:
// when menu is open and has focus
                    if ( self.menu.active ) {
// #6055 - Opera still allows the keypress to occur
                        // which causes forms to submit
                        suppressKeyPress = true;
                        event.preventDefault();
                    }
//passthrough - ENTER and TAB both select the current element
                case keyCode.TAB:
if ( !self.menu.active ) {
return;
                    }
                    self.menu.select( event );
break;
case keyCode.ESCAPE:
                    self.element.val( self.term );
                    self.close( event );
break;
default:
// keypress is triggered before the input value is changed
                    clearTimeout( self.searching );
                    self.searching = setTimeout(function() {
// only search if the value has changed
                        if ( self.term != self.element.val() ) {
                            self.selectedItem = null;
                            self.search( null, event );
                        }
                    }, self.options.delay );
break;
                }
            })

.bind("input.autocomplete",function( event ){
if ( suppressKeyPress ) {
                    suppressKeyPress = false;
                    event.preventDefault();
                }   
                clearTimeout( self.searching );   
                self.searching = setTimeout(function() {
if ( self.term != self.element.val() ) {
                        self.selectedItem = null;
                        self.search( null, event );
                    }
                }, self.options.delay );
            })