Mukhtar,
<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8" />
<script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
<select id='items'>
<option value='0'></option>
<option value='20'>Шкаф</option>
<option value='44'>Диван</option>
<option value='100'>Телевизор</option>
<option value='115'>Кресло</option>
<option value='227'>Сервант</option>
</select>
<script>
var $_GET = {};
$_GET['id']= 100;
$('#items').val($_GET['id'])
</script>
</body>
</html>