add:  if(!this.oldOnselectstart) { this.oldOnselectstart = document.onselectstart; document.onselectstart = function() {return false;} }  
context:     mousedown: function (evt) {        if (this.checkModifiers(evt) && OpenLayers.Event.isLeftClick(evt)) {            this.started = true;            this.dragging = false;            this.start = evt.xy;            this.last = evt.xy;            // TBD replace with CSS classes            this.map.div.style.cursor = "move";            this.down(evt);            this.callback("down", [evt.xy]);            OpenLayers.Event.stop(evt);            return false;        }        return true;    },
meta: 1027	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/1027/983618f2fa3cd1d0cb370d3ea8c38daedf77c5f5/Drag.js/buggy/lib/OpenLayers/Handler/Drag.js