 node into the Document or DocumentFragment at the start of 
 the Range. If the container is a Text node, this will be split at the 
 start of the Range (as if the Text node's splitText method was 
 performed at the insertion point) and the insertion will occur 
 between the two resulting Text nodes. Adjacent Text nodes will not be 
 automatically merged. If the node to be inserted is a 
 DocumentFragment node, the children will be inserted rather than the 
 DocumentFragment node itself.<DD><DL>
<DT><B>Spec