function cCookie(name,value,days){
 if (days){
  var date = new Date();
  date.setTime(date.getTime()+(days*24*60*60*1000));
  var expires = "; expires="+date.toGMTString();
 }
 else var expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function rCookie(name){
 var nameEQ = name + "=";
 var ca = document.cookie.split(';');
 for(var i=0;i < ca.length;i++){
  var c = ca[i];
  while (c.charAt(0)==' ') c = c.substring(1,c.length);
  if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
 }
 return null;
}

function shlayer(divid){
 var divis   = document.getElementById(divid).style.display;
 var change1 = "none";
 var change2 = "block";

 if(divis==change2)
  document.getElementById(divid).style.display = divis = change1;
 else
  document.getElementById(divid).style.display = divis = change2;

 cCookie(divid, divis, 0.05);
}

function lshlayer(divid){
 if(rCookie(divid)!=null)
  document.getElementById(divid).style.display = rCookie(divid);
}