code: function mergeHeadBody( elem ) {
  		var old = find( destChildren, elem.name ),
  			html;
  
  		if ( old ) {
  			merge( elem );
  		} else {
  			html = find( destChildren, 'html' );
  			combine( html.children, elem );
  		}
  	}
docs: Merge <head> and <body> tags that are directly in the source
  @param {Object} elem New head/body element