rem:  if (!nextNode)  if (selectedNode.previousSibling) nextNode = selectedNode.previousSibling;  
add:  if (!nextNode)  if (selectedNode.previousSibling) nextNode = selectedNode.previousSibling;  
context: function RemoveDomains(obj){  var nextNode = null;  var numSelected = obj.tree_node.selectedItems.length;  var deleted_all = false;  while (obj.tree_node.selectedItems.length > 0) {    	var selectedNode = obj.tree_node.selectedItems[0];    nextNode = selectedNode.nextSibling;    	if (!nextNode) 	      if (selectedNode.previousSibling) 		nextNode = selectedNode.previousSibling;        var row  =  selectedNode.firstChild;    var cell =  row.firstChild;  	row.removeChild(cell);	  selectedNode.removeChild(row);    obj.treeroot_node.removeChild(selectedNode);   } //while    if (nextNode) {    obj.tree_node.selectItem(nextNode)  } //if  UpdateSavePrefString(obj);} 
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