Hi i've been looking at lots of tutorials and can't find anything it might be my poor google skills but I hoped the answer was quick and simple. 

**The Plan**

The aim is to make an extension which will append any website using javascript.

**Current State**

I current have the javascript append coded and basic manifesto created

```
document.body.innerHTML += '<div id="adBar" style="background-color: #933131; width: 150px; height: 400px; position: fixed; left: 10px; top: 25%;"></div>'

```

**The Problem**

I can't find anywhere how to create a chrome extension which would allow this script to run in the background on every page, I can only find how to make a pop-up on click.

I hope this is clear and simple. All help is appreciated!