siva7170 TechnoSparks Thanks bro for your helping mind. By the way, i found that solution.

<script> $(window).load(function(){ var wsddl=$(".ws_css_header_dropdown_icon").offset().left; var wsddl1=wsddl-$(window).scrollLeft(); var wsddt=$(".ws_css_header_dropdown_icon").offset().top; var wsddt1=wsddt-$(window).scrollTop(); alert("L:"+wsddl1+" ; T:"+wsddt1); }); </script>

we have used css for positioning (margin) of the the specific element. But, I needed script to show the distance of both side(top, left) of specific element from the browser window. Because, currently i'm working on one project. So, i need it. now, i got it by simple calculations.
Anyway, thank you bro.