HOW TO: activate the zoom of External Services embedded into Dashboard Widget

In the Dashboard Widget regarding External Services, on the left side corner appears the control for resizing the widget as in the following figure.
In addition, the control reported below provides two small buttons (-) and (+) they can be used to zoom the web page of the External Service on Web page embedded.
This approacj is adopted in Synopic and other external services

To enable this feature you have to add the following statement into the HTML code of the web page of th External Service that you are embedding into Snap4City Dashboard Widget.

<script src="zoomHandler.js"></script>

It has to be located in the <head> ...</head> of your main html page you are embedding.

Please remaind to place the file "zoomHandler.js" in the same path of your HTML file.