add: if(this.layer.opacity != null) { OpenLayers.Util.setOpacity(this.imgDiv, this.layer.opacity); } 
context:     initImgDiv: function() {        if (this.layer.alpha) {            this.imgDiv = OpenLayers.Util.createAlphaImageDiv(null,                                                           this.position,                                                           this.size,                                                           null,                                                           "absolute",                                                           null,                                                           null,                                                           true);        } else {            this.imgDiv = OpenLayers.Util.createImage(null,                                                      this.position,                                                      this.size,                                                      null,                                                      "absolute",                                                      null,                                                      true);        }        this.layer.div.appendChild(this.imgDiv);    },
meta: 4411	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4411/3ba79abd6c2c95541b2f6f2275007bb09af25f23/Image.js/buggy/lib/OpenLayers/Tile/Image.js