About: http://webisa.webdatacommons.org/4133359

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Have a look at using jQuery UI. I know it is a different technology to html5, but it is got a higher cross-browser compatibility and I have always used it in the past for a similar sort of effect.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com