how to save current url using javascript [Imacros]

I am searching for such method to save the current url of the webpage to a file. after alot search I found this working script:

SET !ERRORIGNORE YES

SET !EXTRACTADD {{!URLCURRENT}} SAVEAS TYPE=EXTRACT FOLDER=c:\ FILE=URL.CSV

But the point is that how to use this in javascript . I just tried as following :

var link;

link +="SET !ERRORIGNORE YES": link +="SET !EXTRACTADD {{!URLCURRENT}}";`` link +="SAVEAS TYPE=EXTRACT FOLDER=c:\ FILE=URL.CSV";

but this is not working for me . I am just a noob , Help me out with a easy way :)

Thanks in Advance