Document Referrer and Microsoft Word

I use http:\\name\word.doc to open a word document. I then click on a hyperlink in the word document to go to the next url http:\\name\test.asp. I want to read in the referrer url so I can later return to the word document. I can use the document.referrer property if the referring url is a html page but if the referring page is from a link in a word document, the document.referrer property does not work. Can anyone provide a work-around to this problem. Thank you.