var isDOM = typeof document.addEventListener != "undefined"; function getCommonEvent(e) { var obj = e; if ( !isDOM ) { obj.e = e; obj.layerX = e.offsetX; obj.layerY = e.offsetY; obj.target = e.srcElement; obj.stopPropagation = function() { this.e.cancelBubble = true; } } return( obj ); }