Magento: Add Javascript or CSS to Home Page Only (Or Any CMS Page)

CMS pages in Magento allow you to modify the layout XML specific to that page. So, all you need to do is open up the CMS page in Magento that you want to add the javascript to, click on the “Custom Design” tab on the left, and in the “Layout Update XML” field add the following:

“Custom Design” tab on the left, and in the “Layout Update XML” field add the following:

<reference name="head">
  <action method="addItem">
    <type>skin_js</type><script>yourfile.js</script>
  </action>
</reference>

Or, if you want to just put the javascript in the /js/ directory of your app, you can change the “skin_js” to just “js”.

Ref - http://prattski.com/2010/03/08/magento-add-javascript-to-home-page-only-or-any-cms-page/