dojo.fx.wipeIn

Dojox.fx.wipeTo lets you wipe the size of a node to a defined size.

Wiping in a node with "display: none; position: absolute;"

dojo.require("dojox.fx");
dojo.require("dijit.form.Button");

function wipeInOne(){
  dojox.fx.wipeTo({
    node: "wipeDisplayNode",
    duration: 300,
    height: 200
  }).play();
}

function wipeOutOne(){
  dojox.fx.wipeOut({
    node: "wipeDisplayNode",
    duration: 300
  }).play();
}
<div style="height: 250px;">
  <button data-dojo-type="dijit.form.Button" data-dojo-props="onClick:wipeInOne">Wipe in</button>
  <button data-dojo-type="dijit.form.Button" data-dojo-props="onClick:wipeOutOne">Wipe out</button>
  <div id="wipeDisplayNode" style="height: 200px; position: absolute; top: 30px; width: 500px; background: #ccc; display: none;">
    <div style="padding: 10px;">Hi friends</div>
  </div>
</div>