rem: this.mDraggingBox.setAttribute("col-dragging", "false"); 
add: this.mDraggingBox.removeAttribute("col-dragging"); 
context:   setDraggingBox: function(aBox)  {    if (this.mDraggingBox) {      this.mDraggingBox.setAttribute("col-dragging", "false");    }    this.mDraggingBox = aBox;    if (aBox)      aBox.setAttribute("col-dragging", "true");  },
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/7b10439c40b4254072b774f5f2ee3fb15c693ade/columnsDialog.js/clean/extensions/inspector/resources/content/viewers/dom/columnsDialog.js