add: var tab = this.findViewTab(target); if (tab) tab.removeAttribute("dragover"); 
context: function vmgr_dragexit (event, session){    var target = this.findFloatingView(event.originalTarget);    if (target)    {        target.removeAttribute ("dragover");        target.proxyIcon.removeAttribute ("dragover");    }}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/bb4371516e0961b4583fccf05f8b9f3ba9808c81/view-manager.js/buggy/extensions/venkman/resources/content/view-manager.js