private void DeleteInsertionTargetBlockIfEmpty(MarkupPointer insertionPoint)
{
//locate the parent block element (stop at post body element)
IHTMLElement parent = insertionPoint.GetParentElement(
ElementFilters.CreateCompoundElementFilter(ElementFilters.CreateElementEqualsFilter(HTMLElement),
ElementFilters.BLOCK_ELEMENTS));
if (parent != null &&
parent.sourceIndex != HTMLElement.sourceIndex && //never remove the post body block
EditorContext.MarkupServices.CreateMarkupRange(parent, false).IsEmptyOfContent())
{
//delete the empty parent block element
(parent as IHTMLDOMNode).removeNode(true);
}
}