Just embed Google Doc Viewer through an iframe and specify the DOC file you want to display. This is the code you should add:
<iframe src="http://docs.google.com/gview?url=http://infolab.stanford.edu/pub/papers/google.pdf&embedded=true" style="width:600px; height:500px;" frameborder="0"></iframe>
Then you just need to set up your own document file to the "url" query string param and that's it! You can display not just DOC but any other file supported by the viewer like pdf, xls, etc. in any browser!