$(function () {
        var availableTags = [
	{ key: "1", value: "NAME 1" }, { key: "2", value: "NAME 2" },
    { key: "3", value: "НАЗВ 1" }, { key: "4", value: "НАЗВ 2" }
	 ];

        $("#project-name").autocomplete({
            minLength: 0,
            source: availableTags,
            focus: function (event, ui) {
                $("#project-name").val(ui.item.value);
                return false;
            },
            select: function (event, ui) {
                $("#project-name").val(ui.item.value);
                $("#project-id").val(ui.item.key);

                return false;
            }
        });

    });

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />    
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css" />
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>

<input id="project-name" name="project2" id="searchbox" value="НАЗВ 1" />
<input  type="text" id="project-id" value="3" />

<input id="project-name" name="project2" id="searchbox" value="NAME 1" />