810f289d_AutoCompleteJS___Documentation__Description
[Property / Type] ajaxErrorHTML String or Function [Required] no [Default] 'AJAX Error' [Example] ajaxErrorHTML string ajaxErrorHTML function [Description] 
An HTML string to display when an AJAX request has failed. If ajaxErrorHTML is a function, the first argument is the type of error that has occurred, the second argument is the text that the user has entered, and the third argument is the current value of the AutoComplete widget. Possible values for the first argument are: 'timeout', 'error', and 'parsererror'. Note: you will never see 'abort', as this is handled internally by AutoComplete. The function should return an HTML string.
AutoCompleteJS » Documentation
Description