no that is not working.
actually i think i m not able2(transmit/transit) DOM variables containing values from one function2another in that functions.

.. but why document.writeln(img); outputs as if values are passed ..

also if i put constant values like 'image1', 'image2'
in this code without any suggested modification like
{setTimeout("animate2('image1')",99);}, these functions works. DOM values are not getting into functions correctly ?

can anyone list few urls that explain exhaustive/comprehensive information about javascript functions. i couldn't find this at sites like javascriptkit.com, dynamicdrive.com etc.