javascript relative path to load xml file

[torontodesi]

The file/folder structure is like

root/one/index.htm
root/one/files/images/picture.jpg

root/two/index.htm
root/two/files/images/pict888.jpg

root/shared/files/js/test1.js
root/shared/files/xml/datafile.xml
​

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The index.htm files in folder one and two has reference to .js file -----

<script src="../shared/files/js/test1.js" type="text/javascript"></script>​

in head section. That is simple.

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Now the .js file has code to open xml file as follows:

xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async=false;
xmlDoc.load("path"); ​

QUESTION 1 what this path could be?
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there are pictures on index.htm in one and two which come from respective files/images folders, but their path is obtained from .xml file

<row1 id="1" imageurl="imagepath" rowtitle="title">desctiption test</resrow>​

QUESTION 2 what this imagepath could be?
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QUESTION 3 For the above file/folder structure do path and imagepath change depending its on location - local machine or web server?

Thanks