/**
 * 
 */
function datepick(field_id,date_start,date_end){ 
    $('#'+field_id) 
        .datePicker( 
            { 
                createButton:false, 
                startDate:date_start, 
                endDate:date_end 

            } 
        ).bind( 
            'click', 
            function() 
            { 
                updateSelects($(this).dpGetSelected()[0],$(this).attr("id")); 
                $(this).dpDisplay(); 
                return false; 
            } 
        ).bind( 
            'dateSelected', 
            function(e, selectedDate, $td, state) 
            { 
                updateSelects(selectedDate,$(this).attr("id")); 
            } 
        ).bind( 
            'dpClosed', 
            function(e, selected) 
            { 
                updateSelects(selected[0],$(this).attr("id")); 
            } 
        ); 
    var updateSelects = function (selectedDate) 
    { 
        var selectedDate = new Date(selectedDate); 
                if (selectedDate.getDate()<10){ 
                    $('#'+field_id+'Day option[value=0' + selectedDate.getDate() + ']').attr('selected', 'selected');
                } else { 
                    $('#'+field_id+'Day option[value=' + selectedDate.getDate() + ']').attr('selected', 'selected');
                } 
                if (selectedDate.getMonth()<9){ 
                    $('#'+field_id+'Month option[value=0' + (selectedDate.getMonth()+1) + ']').attr('selected', 'selected');
                } else { 
                    $('#'+field_id+'Month option[value=' + (selectedDate.getMonth()+1) + ']').attr('selected', 'selected');
                } 
        $('#'+field_id+'Year option[value=' + (selectedDate.getFullYear()) + ']').attr('selected', 'selected');
    } 

    $('#'+field_id+'Day, #'+field_id+'Month, #'+field_id+'Year') 
        .bind( 
            'change', 
            function() 
            { 
                var d = new Date( 
                            $('#'+field_id+'Year').val(), 
                            $('#'+field_id+'Month').val()-1, 
                            $('#'+field_id+'Day').val() 
                        ); 
                $('#'+field_id).dpSetSelected(d.asString()); 
            } 
        ); 
     
    $('#'+field_id+'Day').trigger('change'); 

    // Can i use drop? 
    $('#'+field_id+'_drop').bind( 
        'click', 
        function() 
        { 
            $('#'+field_id+'Year').val(""); 
            $('#'+field_id+'Month').val(""); 
            $('#'+field_id+'Day').val(""); 
        } 
    ); 
}