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<head>
    <meta http-equiv="content-type" content="text/html;charset=UTF-8" />
    <title>AMQ & Maps Demo</title>

    <!-- Stylesheet -->
    <link rel="stylesheet" type="text/css" href="style.css"></link>

    <!-- Google APIs -->
    <script type="text/javascript" src="http://www.google.com/jsapi?key=abcdefg"></script>

    <!-- Active MQ -->
    <script type="text/javascript" src="amq/amq.js"></script>
    <script type="text/javascript">amq.uri='amq';</script>

    <!-- Application -->
    <script type="text/javascript" src="application.js"></script>
</head>

$(document).ready(function(){/*do stuff here*/});

document.observe("dom:loaded", function() {/*do stuff here*/});

<script>
   function doIt() {/*do stuff here*/}
</script>
<body onLoad="doIt();"></body>

function addJavaScript( js, onload ) {
   var head, ref;
   head = document.getElementsByTagName('head')[0];
   if (!head) { return; }
   script = document.createElement('script');
   script.type = 'text/javascript';
   script.src = js;
   script.addEventListener( "load", onload, false );
   head.appendChild(script);
}

_spBodyOnLoadFunctionNames.push("yourFunction");