Check boxes add values to the list of selected filter values. Values are removed from the list when check boxes are cleared. The set filter value corresponds to the value in the object title. You can use check boxes to set one or multiple filter values simultaneously.
If the line of JavaScript that calls the Quick Filter handler is present in the control, then each click of a check box sets or resets the selected value. If the line of JavaScript is commented out or removed from the control, then the values selected are not set or reset until the Quick Filters command button is pressed, at which time all check box, text box and list box selections are processed at the same time.