fixed css attributes position and overflow moved to css for better styling

with this modification its possible to load timeline view aligned to a parent container

overruling css in user css

```css
div.timeline-frame {
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
}
```

and passing following options when drawing

```js
timeline.draw(data,{
	width: "inherit",
	height: "inherit"
});
```