rem: return viewPortPx.add(-parseInt(this.layerContainerDiv.style.left), -parseInt(this.layerContainerDiv.style.top)); 
add: var layerPx = null; if (viewPortPx != null) { var dX = -parseInt(this.layerContainerDiv.style.left); var dY = -parseInt(this.layerContainerDiv.style.top); layerPx = viewPortPx.add(dX, dY); } return layerPx; 
context:     getLayerPxFromViewPortPx:function(viewPortPx) {        return viewPortPx.add(-parseInt(this.layerContainerDiv.style.left),                              -parseInt(this.layerContainerDiv.style.top));    },
meta: 1027	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1027/f3a072b151fd0fb48097965647921f2ea0396651/Map.js/clean/lib/OpenLayers/Map.js