// JavaScript Document
function ecrire_cookie(coor) {
  document.cookie="deplacement"+"="+escape(coor);
}

function arguments_cookies(offset){
  var endstr=document.cookie.indexOf (";", offset);
  if (endstr==-1) endstr=document.cookie.length;
  return unescape(document.cookie.substring(offset, endstr)); 
}


function lire_cookie() {

  var arg="deplacement"+"=";
  var alen=arg.length;
  var clen=document.cookie.length;
  var i=0;
  while (i<clen){
    var j=i+alen;
    if (document.cookie.substring(i, j)==arg){
		//alert(arguments_cookies(j));
       return arguments_cookies(j);

	}
	   i=document.cookie.indexOf(" ",i)+1;
    	if (i==0) break;
  }
  return null; 
}
	function deplacement(){
		scrollTo(0,lire_cookie());
		document.onmousemove=function(){
							ecrire_cookie(document.documentElement.scrollTop)
							}
	}

scrollTo(0,lire_cookie());