better links

three.js/examples/multi-markers/examples/threex-screenasportal/examples/screenAsPortal.html

@@ -40,7 +40,7 @@
 	Screen as a gate to another world - by <a href='https://twitter.com/jerome_etienne' target='_blank'>@jerome_etienne</a>
 	with <a href='https://github.com/jeromeetienne/AR.js/' target='_blank'>AR.js</a>
 	<br>
-	Directly inspired of the <a href='https://www.youtube.com/watch?v=Jd3-eiid-Uw'>cult demo</a> by <a href='https://www.youtube.com/user/jcl5m/videos'>johnny lee</a>
+	Directly inspired of the <a href='https://www.youtube.com/watch?v=Jd3-eiid-Uw target='_blank''>cult demo</a> by <a href='https://www.youtube.com/user/jcl5m/videos' target='_blank'>johnny lee</a>
 </div>
 <div style='position: fixed; bottom: 10px; width:100%; text-align: center;z-index:1; color: grey;';>
 	<a id='markerHelpersButton' href='javascript:void(0)'>marker helper : <span>hidden</span></a>