docs: function checkNode(node, clone)
  			{
  				if (node != null)
  				{
  					if (clone.originalNode != node)
  					{
  						cleanNode(node);
  					}
  					else
  					{
  						node = node.firstChild;
  						clone = clone.firstChild;
  						
  						while (node != null)
  						{
  							var nextNode = node.nextSibling;
  							
  							if (clone == null)
  							{
  								cleanNode(node);
  							}
  							else
  							{
  								checkNode(node, clone);
  								clone = clone.nextSibling;
  							}
  	
  							node = nextNode;
  						}
  					}
  				}
  			}