How to display zoho.loginuser and zoho.loginuserid on Page

Hi, I would like to make a page with user name and user's e-mail address.

It might be very simple thing, but I could not find a documentation about how to display zoho.loginuser and zoho.loginuserid on page by using script.

As I am not a programmer, I tried

print(zoho.loginuser);
write(zoho.loginuserid);

by putting after

<%{%>

or <%{

but nothing worked.

Can anybody help me to make my page work correctly?

Thank you very much.