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,expiredays)
{
  var exdate=new Date()
  exdate.setDate(exdate.getDate()+expiredays)
  document.cookie=c_name+ "=" +escape(value)+
    ((expiredays==null) ? "" : ";expires="+exdate.toGMTString())
}

function checkCookie()
{
  ThickBox=getCookie('ThickBox')
  if (ThickBox==null || ThickBox=="")
  {
	imgLoader = new Image();// preload image
	imgLoader.src = tb_pathToImage;
  	tb_show('Zapisy na treningi!', 'popup.html?height=160&width=300', null)
    setCookie('ThickBox','OK',365)
  }
}