TickmarkMouseDown プロパティ

// The client event TickmarkMouseDown takes two parameters sender and e
// sender  is the object which is raising the event
// e is the SliderTickmarkMouseEventArgs
    function WebSlider1_TickmarkMouseDown(sender, e) {

        var slider = $find("WebSlider1");

        //Checks if control is enabled or disabled
        var check = slider.get_enabled();

        //Gets main value as object
        var value = slider.get_value();

        //Gets percent between edge of track bar(working area) and a tickmark which is closest to location of mouse
        var resultVar = e.get_tickPercent();

        
    }