Handlebars Template

HTML

<script src="https://dl.dropbox.com/u/22528488/handlebars.js"></script>
<pre id="result"></pre>

JavaScript

var rendered = Handlebars.compile(
    "{{#each outer}} {{#each inner}} {{..@index}},{{@index}}: {{this}} {{/each}}<br>{{/each}}"
)({
    outer: [
        { inner: ['a','b','c'] },
        { inner: ['d','e','f'] },
        { inner: ['g','h','i'] }
    ]
});

$("#result").html(rendered);