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.toUTCString());
}

function checkCookie(mysty)
{
	mysty_value=getCookie("mysty_name");
	if (mysty_value!=null && mysty_value!="")
	{
		change_sty(mysty_value);
	}
	else
	{
		mysty_value='2';
		setCookie('mysty_name',mysty_value,365);
		change_sty(mysty_value);
	}
}