As the requests for smooth scrolling widgets in Dojo keeps pouring in, Heng Liu took the initiative and implemented dojo.lfx.smoothScroll.

Along with this new dojo.lfx resource, other improvements include:

• dojo.html.getAbsolutePosition is extended to be compatible with dojo.withGlobal
• a new function, dojo.html.getAbsolutePositionExt is introduced in resource dojo.html.util to include support for getting abosolute postion of a node in iframes with regards to a given window. The reason why this is not merged into dojo.html.getAbsolutePosition is that, this new feature depends on APIs defined in dojo.html.util. In order to avoid introducing it as a dependency in dojo.html.layout, this design decision is made.
  Demo: Note: Click Button on Top Right to see the effects.

dojo.event.connect(dojo.byId("goToHeader0"), "onclick", function (e) {
var h2s = dojo.html.iframeContentDocument(dojo.byId("embed0")).getElementsByTagName('h2');
var h2 = h2s[h2s.length-1];
var anm = new dojo.lfx.smoothScroll(h2,dojo.html.iframeContentWindow(dojo.byId("embed0")),null,500);
anm.play();
});

ajaxian

Dojo, Smooth Scrolling, Components