[web2py] unable to call ajax url from external javascript.

[Pradeesh]

I am new to web2py.
form my view i am able to call web2py ajax as "
ajax("{{=URL(r=request,c='control2',f='function1')}}"['name'],'target');
". But the same command is not working from an external javascript.
How can i call a function (in another control file) using ajax from an
external JavaScript.