As you  can see this is the kind of data that is searched for everyday in SharePoint  (could I have accessed some kind of SharePoint API that returns real ones, sure  but I knocked this up quickly). 
 
 Then I created a Content Editor Web Part on my page to paste the following  JavaScript into:
  	Code (Script)   	 	<link 	href="http://code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css" 	rel="stylesheet" 	/>
 	 	 	<script 	src="http://code.jquery.com/jquery-1.9.1.js"></script>
 	 	 	<script 	src="http://code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
 	 	 	<link 	href="/resources/demos/style.css" 	rel="stylesheet" 	/>
  
 	 	 	<script 	type="text/javascript">
 	 	$(document).ready(function()
 	 	{      	
 	 	 var  	soapEnv = "<soapenv:Envelope xmlns:soapenv='http://schemas.xmlsoap.org/soap/envelope/'><soapenv:Body>  	<GetListItems xmlns='http://schemas.microsoft.com/sharepoint/soap/'><listName>Microsoft
 	 	 	employees</listName><viewFields><ViewFields><FieldRef Name='Employee'  	/>
 	 	</ViewFields></viewFields>  	</GetListItems> </soapenv:Body> </soapenv:Envelope>";
 	 	       	//Make a call to the List WebService using the  	SOAP envelope described above.
 	 	     	//The URL is fixed to a Specific Site  	Root. Feel free to change this    
 	 	 //to  	your own fixed root or do some jscript voodoo to figure out where  	
 	 	      	//Of course in 2010 you can do this with the  	Client Object Model, or hit    
 	 	 //the  	list rest Service and return JSON, so enabling jsonp cross site calls.   	
 	 	$.ajax({         	
 	 	url: 	"http://SvrName:7070/_vti_bin/lists.asmx", 	
 	 	type: 	"POST",
 	 	dataType: 	"xml",
 	 	data:  	soapEnv, 
 	 	 	contentType: "text/xml; charset=\"utf-8\"",
 	 	 	success: function( xmlResponse )         { 	
 	 	 	var  	domElementArray=$( "z\\:row", xmlResponse  	); 
 	 	   	var dataMap = domElementArray.map(function() 	
 	 	   {     	
 	 	   	return { 
 	 	    	value: $(this).attr('ows_Employee')  	, 
 	 	   id:  	$(this).attr('ows_Employee') 	
 	 	   }; 	
 	 	   }); 
 	 	 	            var data = dataMap.get();  	
 	 	 
 	 	 	            //Find the Sharepoint Portal  	Search Box (this is a poor selector, but it is not properly named by  	sharepoint, well it is but INamingContainer getrs in the way)     	
 	 	 	           $( "#tags" ).autocomplete(    	
 	 	 	            {
 	 	 	                 source: data 
 	 	 	            });
 	 	 	            }     
 	 	 	            });//.ajax   
 	 	 
 	 	 	                        });//docReady  	
 	 	 
 	 	 	</script>
 	 	 	<div 	class="ui-widget">
 	 	    	<label 	for="tags">
 	 	         	Microsoft employees</label>
 	 	    	<input 	id="tags">
 	 	 	</div>
 	This could easily be additional page head stuff or master page stuff or  	in 2010 a custom action for a script and so on, but here it’s a CEWP. 
 	
 	Some of the prerequisites for using jQuery UI Autocomplete are: