<xf:action type="javascript" ev:event="xxforms-value-changed" ev:observer="class-navigation">
alert('Script fired for ' + ORBEON.xforms.Document.getValue("class-navigation"));
var oldIFrame = ORBEON.jQuery('clamlframe');
var newIFrame = document.createElement("IFRAME");
newIFrame.id = oldIFrame.id;
newIFrame.frameBorder = oldIFrame.frameBorder;
newIFrame.width = oldIFrame.width;
newIFrame.height = oldIFrame.height;
newIFrame.src = "https://decor.nictiz.nl/terminology/claml/ViewClass?classificationId=2.16.840.1.113883.6.3.2&statusCode=active&code=R73.0";
oldIFrame.replaceWith(newIFrame);
</xf:action>