rem: child = bucket.removeChild(bucket.selectedItems[item]) = null; 
add: child = bucket.removeChild(bucket.selectedItems[item]; 
context: function RemoveSelectedAttachment(){  var child;  var bucket = document.getElementById("attachmentBucket");  if (bucket.selectedItems.length > 0) {    for (var item = bucket.selectedItems.length - 1; item >= 0; item-- )    {      child = bucket.removeChild(bucket.selectedItems[item]) = null;      // Let's release the attachment object hold by the node else it won't go away until the window is destroyed      child.attachment = null;    }    gContentChanged = true;  }}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/863e5ac62c1bad273e07f6417044f47a68ce4280/MsgComposeCommands.js/buggy/mailnews/compose/resources/content/MsgComposeCommands.js