filter data in autocomplete textbox

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ASP.NET

Javascript

Ajax

jQuery

Hi All,
I have a control A that fill data in Color_Type table and a control B fill data in Colors table and this control B is autocomplete control.
How i can filter data in control B by control A.
and my code:

function changeList_Color() {
    // Isolate the appropriate list by using the value
    // of the currently selected option
    cboColorType = document.getElementById("cboColorType");
    cboColor = document.getElementById("cboColor");

    var typeID = cboColorType.options[cboColorType.selectedIndex].value;
    var list = com.vietaz.thietbivattu.admin.CProduct.getColorType(typeID);
    list = list.value.split("|||");
    list = new Array(list[1].split(','), list[0].split(','));
    // Next empty the slave list
    emptyList(cboColor);
    // Then assign the new list values
    fillList(cboColor, list, com.vietaz.thietbivattu.admin.CProduct.getStringColor().value);

    //function call autocomplete
    (function($) {
        $(function() {
            //$('#cboColor').autocomplete( "destroy" )
            $('#cboColor').selectToAutocomplete();
        });
    })(jQuery);
}

Hope all help