jQuery UI #6059

http://bugs.jqueryui.com/ticket/6059

HTML

<script src="http://code.jquery.com/jquery-1.8.2.js"></script>
<link href="http://code.jquery.com/ui/1.9.0/themes/base/jquery-ui.css" rel="stylesheet" />
<script src="http://code.jquery.com/ui/1.9.0/jquery-ui.js"></script>

<div id="buttons">
    <button>On</button>
</div>

CSS

.ui-state-disabled .ui-icon {
    filter:Alpha(Opacity=90);
}

JavaScript

$('#buttons').button({
    icons: {
        primary: 'ui-icon-gear'            
    },
    disabled: true            
});