I am using the following jquery and PHP to populate an autocomplete. I will add a btnShowDetails and I woudl like to let the btnShowDetails read the value of the autocomplete (which is the company_guid? How can I do this please.

jquey for autocomplete:

2. $("input#txtCompanyName").autocomplete
3.     (
4.         {
5.             source : function (request, callback)
6.             {
7.                 var data = { term : request.term };
8.                 $.ajax
9.                 (
10.                     {
11.                         url : "../autocomplete_company.php",
12.                         data : data,
13.                         search  : function(){$(this).addClass('working');},
14.                         open    : function(){$(this).removeClass('working');},
15.                         complete : function (xhr, result)
16.                         {
17.                             if (result !== "success") return;
18.                             var response = xhr.responseText;
19.                             var autocomplete_result = [];
20.                             $(response).filter ("li").each (function ()
21.                             { autocomplete_result.push ($(this).text ());
22.                         }
23.                     );
24.                     callback (autocomplete_result);
25.                 }
26.             }
27.             );
28.         }
29.     }); 

and it's reading from this autocomplete_company.php:

2. <?php
3.     include('includes/php_header.php');
4.     include($_SESSION["absolute_path"] . '/includes/connect2db.php');
5. 
   
6.     $autocomplete_term = utf8_decode($_REQUEST["term"]);
7.     
8.     $mysql_command = "CALL sp_autocomplete_company(:param_company)";
9.     $mysql_query = $mysql_connection->prepare($mysql_command);
10.     $mysql_query->bindParam(':param_company', $autocomplete_term, PDO::PARAM_STR);
11.     $mysql_query->execute();
12. 
    
13.     while($mysql_row = $mysql_query->fetch())
14.     {
15.         echo ("<li>" . utf8_encode($mysql_row['company_name']) . "</li>");
16.     }
17. ?>

and here I want to read the autocomplete value:

2. $('#btnShowDetails').click(function(){
3.     $.ajax({
4.         url : "get_company_details.php",
5.         data : 'id=HERE I WANT TO READ THE VALUE OF THE AUTOCOMPLETE',
6.         type : "post",
7.         success : function(data)
8.         {
9.             here I am displaying the result
10.         }
11.     });
12. });