I noticed that while using DNNTree the browser status always shows the URL location of the spacer.gif file.  Not sure if this is by design or not but, I would rather show the user a nice assuring Done status.  It even made me think there might be a problem somewhere.  I traced it back to the dnn.controls.dnntree.js file and the routine below and the lined highlighted within.  I commented it out and everything seems to work fine.

I am almost sure this will have no impact, am I correct?

dnn_control.prototype.DNNTree.prototype.renderSpacer = function (iWidth)
{
var oImg = document.createElement('IMG');
oImg.src = this.sysImgPath + 'spacer.gif';
window.status = oImg.src;
oImg.width = iWidth;
oImg.style.width = iWidth;
oImg.style.height = '1';
return oImg;
}