Need help on passing value from jQuery to php

Need help on passing value from jQuery to php

Hi everybody.

I have problem with passing value from jQuery to php and then to echo that on select change.
Assume i have page something like this:

<html>
<head>
</head>
<body>
<input type="text" id="something" value="" />
<select name="Type" id="vals">
<option value="10">First</option>
<option value="20">Second</option>
<option value="30">Third</option>
<option value="40">Fourth</option>
</select>
<script type="text/javascript">
jQuery(document).ready(function(){
jQuery('#vals').change(function(){
jQuery('#something').val(jQuery('#vals option:selected').val());
});
});
</script>
</body>
</html>

This works perfect when changing values from select and output in text box ... but i want to use selected value in php ....What is the best solution for this? I'm trying to use $_POST or $_GET in php ....
or if anyone has better solution fell free to post,i'll be glad for any help.

Thanks in advance.
Dusan,