function onImageRecognizedFn(targetName) {
                                this.isVisible = true;
                                console.info('onImageRecognized: ' + targetName);
                                World.hideInfoBar();
                                document.getElementById("stopExtendedTrackingButton").style.display = "inline";
                            }
/* one of the targets is visible */
one of the targets is visible
one of the targets is visible
function onImageRecognizedFn(targetName) {
                                this.isVisible = true;
                                console.info('onImageRecognized: ' + targetName);
                                World.hideInfoBar();
                                document.getElementById("stopExtendedTrackingButton").style.display = "inline";
                            }
function onImageRecognizedFn ( targetName ) { this . isVisible = true ; console . info ( 'onImageRecognized: ' + targetName ) ; World . hideInfoBar ( ) ; document . getElementById ( "stopExtendedTrackingButton" ) . style . display = "inline" ; }
one of the targets is visible
one of the targets is visible