function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=");
  if (c_start!=-1)
    { 
    c_start=c_start + c_name.length+1 ;
    c_end=document.cookie.indexOf(";",c_start);
    if (c_end==-1) { c_end=document.cookie.length; }
    return unescape(document.cookie.substring(c_start,c_end));
    } 
  }
return "";
}

function setCookie(c_name,value)
{
var ddate=new Date();
var xdate=ddate.getTime();
xdate += 3600*1000;
ddate.setTime(xdate);
document.cookie=c_name+ "=" +escape(value) +"; expires=" +ddate.toGMTString();
}

function checkCookie()
{
state=getCookie('state');
if (state!="yes")
  {
  state='yes';
  setCookie('state',state);
  skok();
  }
}