Effect demo: Change anchor to button element

Author: jzaefferer

demos/effect/default.html

@@ -95,7 +95,7 @@ <h3 class="ui-widget-header ui-corner-all">Effect</h3>
 	<option value="transfer">Transfer</option>
 </select>
 
-<a href="#" id="button" class="ui-state-default ui-corner-all">Run Effect</a>
+<button id="button" class="ui-state-default ui-corner-all">Run Effect</button>
 
 <div class="demo-description">
 <p>Click the button above to show the effect.</p>