error: Bad value prettyPhoto for attribute rel on element a - bushurenprijs.nl

validating: http://www.bushurenprijs.nl
Error: 
Line 345, Column 65: Bad value prettyPhoto for attribute rel on element a: Not an absolute IRI. The string prettyphoto is not a registered keyword or absolute URL.…="links"><a href="#hoewerkthet" rel="prettyPhoto">&raquo; Meer uitleg</a><br />
Can anyone help me?
Thanks in advance,
Astrid de Vries

 		 	   		  

Received on Monday, 11 March 2013 22:07:12 UTC