add:  updateRemoveAttachmentButton() 
context: function removeSelectedAttachment(){    var attachmentListbox = document.getElementById("attachmentBucket");    var SelectedItem = attachmentListbox.selectedItem;    if(SelectedItem)        attachmentListbox.removeChild(SelectedItem);}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/7ef01c388b38934756f44cc6656ae2041442ea60/eventDialog.js/clean/calendar/resources/content/eventDialog.js