How can i pass a <select> value to php page

ok i have auto complete that i want to be able to select a column of the database before searching on it
i just want to pass the oneone variable over to the php page.

so i have this javascript

<script type="text/javascript">
$().ready(function() {

	function log(event, data, formatted) {
		$("<li>").html( !data ? "No match!" : "Selected: " + formatted).appendTo("#result");
	}
	
	$("#search").autocomplete("test.php", {
		width: 260,
		selectFirst: false
	});
	$("#search").result(function(event, data, formatted) {
		if (data)
			$(this).parent().next().find("input").val(data[1]);
	});
	
	
$(":text, textarea").result(log).next().click(function() {
		$(this).prev().search(); // shows resluts
	});

});


</script>

Code (markup):

the html

	<p class="field" > <select id="oneone" name="oneone" style="width:100px;margin:5px 0 5px 0;" value="">
		<option value="s_last">Last Name</option>
<option value="s_first">First Name</option>

<label>Search</label>
			<input type="text" id="search" />
		</p>
		<p>
			<label>Hidden input</label>
			<input  type="text" id="inputit" />

Code (markup):