rem: this.sliderEvents = new OpenLayers.Events(this, slider); 
add: this.sliderEvents = new OpenLayers.Events(this, slider, null, true); 
context:     _addZoomBar:function(centered) {        var imgLocation = OpenLayers.Util.getImagesLocation();                var id = "OpenLayers_Control_PanZoomBar_Slider" + this.map.id;        var zoomsToEnd = this.map.getNumZoomLevels() - 1 - this.map.getZoom();        var slider = OpenLayers.Util.createAlphaImageDiv(id,                       centered.add(-1, zoomsToEnd * this.zoomStopHeight),                        new OpenLayers.Size(20,9),                        imgLocation+"slider.png",                       "absolute");        this.slider = slider;                this.sliderEvents = new OpenLayers.Events(this, slider);        this.sliderEvents.register("mousedown", this, this.zoomBarDown);        this.sliderEvents.register("mousemove", this, this.zoomBarDrag);        this.sliderEvents.register("mouseup", this, this.zoomBarUp);        this.sliderEvents.register("dblclick", this, this.doubleClick);        this.sliderEvents.register("click", this, this.doubleClick);                sz = new OpenLayers.Size();        sz.h = this.zoomStopHeight * this.map.getNumZoomLevels();        sz.w = this.zoomStopWidth;        var div = null                if (OpenLayers.Util.alphaHack()) {            var id = "OpenLayers_Control_PanZoomBar" + this.map.id;            div = OpenLayers.Util.createAlphaImageDiv(id, centered,                                      new OpenLayers.Size(sz.w,                                               this.zoomStopHeight),                                      imgLocation + "zoombar.png",                                       "absolute", null, "crop");            div.style.height = sz.h;        } else {            div = OpenLayers.Util.createDiv(                        'OpenLayers_Control_PanZoomBar_Zoombar' + this.map.id,                        centered,                        sz,                        imgLocation+"zoombar.png");        }                this.zoombarDiv = div;                this.divEvents = new OpenLayers.Events(this, div);        this.divEvents.register("mousedown", this, this.divClick);        this.divEvents.register("mousemove", this, this.passEventToSlider);        this.divEvents.register("dblclick", this, this.doubleClick);        this.divEvents.register("click", this, this.doubleClick);                this.div.appendChild(div);        this.startTop = parseInt(div.style.top);        this.div.appendChild(slider);        this.map.events.register("zoomend", this, this.moveZoomBar);        centered = centered.add(0,             this.zoomStopHeight * this.map.getNumZoomLevels());        return centered;     },
meta: 8310	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8310/88ff0bc9afe1f5e8246e96516ef7db34199d94bf/PanZoomBar.js/clean/lib/OpenLayers/Control/PanZoomBar.js