I begin with Extjs. I'm facing a problem in Extjs 4 with the web desktop example. I'm using a window to display a php page inside an iframe. In that page I'm using a javascript function to load a new src :
top.Ext.getDom('iframe-win').src = 'my-page.html';
This works great but now I'd like to modify the wallpaper at the same time with :
top.Ext.getBody().setStyle('background-image', 'url(./wallpapers/desk.jpg);');
But it fails in some way. My body got the new wallpaper but I don't target the right container. What is the method to call in order to target this container ?