code: function manipulationTarget( elem, content ) {
  	return jQuery.nodeName( elem, "table" ) &&
  		jQuery.nodeName( content.nodeType === 1 ? content : content.firstChild, "tr" ) ?
  
  		elem.getElementsByTagName("tbody")[0] ||
  			elem.appendChild( elem.ownerDocument.createElement("tbody") ) :
  		elem;
  }
docs: Support: 1.x compatibility Manipulating tables requires a tbody