FBJS setStyle（{backgroundImage}）不起作用？

Question

i am trying to add some images to my facebook tab-app via FBJS.

The Problem:
I can't see the images and I don't know why.

The FBJS code

url = "http://www.domain.de/image.gif";
myImg = document.createElement('img');
myImg.setStyle( {backgroundImage: 'url('+url+')' });
document.getElementById('wrapper').appendChild(myImg); 

The rendered html

<img style="background-image: url("http://www.domain.de/image.gif";);">

Answer 1

Try modifying your code like this and specify the src attribute of the image:

url = "http://www.domain.de/image.gif";
myImg = document.createElement('img');
myImg.setSrc(url);
document.getElementById('wrapper').appendChild(myImg); 

Answer 2

You're really thing to set the background image of an img element? That seems...odd. Are you sure you don't just want to do a normal img element (Sarfraz may have you covered there if so) or specify the background image of the wrapper element? Eg:

url = "http://www.domain.de/image.gif";
document.getElementById('wrapper').setStyle( {backgroundImage: 'url('+url+')' });

I've marked this CW because I've never done any FBJS, so could be talking through my hat. :-) If it helps, it helps.