Don't use the accordion for that, it's not intended for wizardry. And since there's no wizard component available in jquery UI, lets make our own ;)
html:
<ul class="ui-wizard">
<li class="ui-wizard-panel">
<h3 class="ui-wizard-header">panel 1</h3>
<div class="ui-wizard-content">
Panel content
<span class="ui-wizard-next">Goto next</span>
</div>
</li>
<li class="ui-wizard-panel">
<h3 class="ui-wizard-header">panel 1</h3>
<div class="ui-wizard-content">
Panel content
<span class="ui-wizard-next">Goto next</span>
</div>
</li>
</ul>
javascript plugin:
$.fn.wizard = function(){
this.find('.ui-wizard-content').hide();
this.find('.ui-wizard-content:first').show();
this.find('.ui-wizard-content:last .ui-wizard-next').hide(); // just in case
this.delegate('.ui-wizard-next', 'click', function(){
// very long jquery chain...
$(this).closest('.ui-wizard-content')
.hide('fast')
.closest('.ui-wizard-panel')
.next()
.find('.ui-wizard-content')
.show('fast');
});
}
javascript impl:
$(.ui-wizard).wizard();
Ofcourse.. you'd have to theme it yourself, though copy/pasting and renaming accordion styles gets you a long way. A nicer way would be to make an official wizard widget out of this.