Do not update value in text area when navigating dropdown box through arrow keys in Jquery Autocomplete

I am currently working with jQuery Autocomplete and as the question describes, I do not want to update my value in text area which I selects through arrow keys in dropdown. For eg. In my text area, when I type 'user1', suggestions will be filtered in the dropdown and results occur. When I try to navigate through different results in dropdown, the value which I typed gets updated with the value I navigate through arrow keys. I just want to show the results and do not update the value I given when navigating through different items. Answers are highly appreciated.