Use the old browser instead of helios

_layouts/index.html

@@ -97,9 +97,7 @@
 	  <div class="clear"></div>
 
 	  <p class="try">
-	    <button class="huge" onClick="require('amber/helpers').popupHelios()">Try Amber in your browser!</button>
-	    <br>
-	    <span class="info">You may need to allow popups to open the IDE</span>
+	    <button class="huge" onClick="require('amber_vm/smalltalk').Browser._open()">Try Amber in your browser!</button>
 	  </p>
 
 	</div>