TypeError: Argument 1 of EventTarget.dispatchEvent does not implement interface Event

Doesn't seem to work.... using `min` file in a script in the head.

```js
//...
try {
var isFileSaverSupported = !!new Blob();
} catch (e) {
alert("blob not supported");
}

// Get the SVG HTML
var html = svg.outerHTML

// Make the blob thing and save it
var blob = new Blob([html], {type: "image/svg+xml"});
saveAs(blob, id + ".svg");
```