This example shows how to show the dashboard viewer in full screen mode:
<script type="text/javascript">
	// Set full screen mode for the viewer
	var options = new Stimulsoft.Viewer.StiViewerOptions();
	options.appearance.scrollbarsMode = true;
	options.appearance.fullScreenMode = true;
	
	// Create the dashboard viewer with specified options
	var viewer = new Stimulsoft.Viewer.StiViewer(options, "StiViewer", false);
	
	...
</script>

In the screenshot below you can see the result of the sample code:

Full Screen Viewer by Default