Jquery
From Wiki2
You can send more info to the autocomplete script:
$("#quesfrom").autocomplete({
source: function(request, response) {
$.getJSON("../tm/smcompl.php", {
term: extractLast(request.term),
course: document.getElementById("numques").value + 'duck'
}, response);
//$.getJSON("../tm/smcompl.php", {term: extractLast(request.term)}, response);
},