隐藏模糊的自动完成AJAX控件的建议列表

I am implementing an AJAX "autosuggest" box: the user types a string in an input text field, a hidden div with a table is shown, and then he/she can click on a row or scroll the list with the up/down arrows; in the meantime, the focus is still kept on the input text field.I am implementing an AJAX "autosuggest" box: th