rem: newCenter.add( 0, (resolution * 50)); 
add: newCenter.add( 0, slide); 
context:     defaultKeyDown: function (evt) {        var resolution = this.getResolution();        var center = this.getCenter();            var newCenter = center.copyOf();        switch(evt.keyCode) {            case Event.KEY_LEFT:                newCenter.add( -(resolution * 50), 0);                break;            case Event.KEY_RIGHT:                 newCenter.add( (resolution * 50), 0);                break;            case Event.KEY_UP:                newCenter.add( 0, (resolution * 50));                break;            case Event.KEY_DOWN:                newCenter.add( 0, -(resolution * 50));                break;        }                if (!newCenter.equals(center)) {            this.setCenter(newCenter);            Event.stop(evt);        }    },
meta: 1027	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1027/1cca9fcde73919ed0a828a6864b1774550e5b4d5/KeyboardDefaults.js/clean/lib/OpenLayers/Control/KeyboardDefaults.js