Scoping

Globally scoped javascript objects should be avoided. In the rare instances where they are required, such as when a public JS api is being provided, the functions and objects should be nested within the "pho" global namespace object such that window.pho.YOUR_OBJECT becomes the call for clients to make.

<script type="text/javascript">

// create the namespace if not already done so
if(typeof pho == "undefined"){
  pho = {};
}
pho.publicFunction = function(){...}

</script>