var PARTICLE_EXPLORER_HTML_URL = Script.resolvePath('particleExplorer.html'); ParticleExplorerTool = function() { var that = {}; var url = PARTICLE_EXPLORER_HTML_URL; var webView = new OverlayWebWindow({ title: 'Particle Explorer', source: url, toolWindow: true }); var visible = false; webView.setVisible(visible); that.setVisible = function(newVisible) { visible = newVisible; webView.setVisible(visible); } };