My css:

```
background-repeat: repeat;
background-image: url('image.jpg');
background-size:100%;
background-attachment: fixed;
background-attachement: fixed;

```

This works fine on browsers, but when view it on mobile phones - tested on Nokia Lumia and Samsung S2 using latest Firefox version.

I'm talking about viewing the site in desktop view. Is there a different line of code needed to achieve this?