add:  updateRemoveAttachmentButton() 
context: function removeSelectedAttachment(){    var attachmentListbox = document.getElementById("attachmentBucket");    var SelectedItem = attachmentListbox.selectedItem;    if(SelectedItem)        attachmentListbox.removeChild(SelectedItem);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/e1f5e420817ca9cf29dafabdbab36734bd3cc925/eventDialog.js/buggy/calendar/resources/content/eventDialog.js