function getCookie(c_name,c_default)
{
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));
    } 
  }
if (c_default != undefined){
	return c_default;
}else{
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 clearCookies(){
    var new_date = new Date()
    new_date = new_date.toGMTString()
    var thecookie = document.cookie.split(";")
    for (var i = 0;i < thecookie.length;i++){
        document.cookie = thecookie[i] + "; expires ="+ new_date
	}
}