Open XML File On Local Machine With HTML Page

I need to be able to search through an xml located on my local machine with an html page. Here's the thing: this whole system (html files, xml file) will always be on my local machine. Because it's a class project it won't be on a server. So here's the scenario: I navigate to where my files are located (say C:) and I double click my index.html page and this page opens in my browser and from this page I need to be able to search my xml file which is at the same location. I've tried xmlhttprequest and it won't open the xml file I'm guessing because I don't need an http request.

Here's what I have so far:
if (window.XMLHttpRequest) {
xmlhttp=new XMLHttpRequest();
} else {
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
} xmlhttp.open("GET","C:MovieDB.xml",false);
xmlhttp.send(); xmlDoc=xmlhttp.responseXML;

function searchDB() {
if(!xmlDoc){
alert("error")
} var keyword = $('#txtBox').val();
var searchVal = $('#basicCategory :selected').text();
var allitems = xmlDoc.getElementsByTagName("Movie");
for(var i=0;i<allitems.length;i++){
alert(allitems[i].getElementsByTagName(searchVal[0].
childNodes[0].nodeValue);
} }
The code doesn't make it past the xmlhttp.send() line.