//-------------------------------------------------------------------------------------------------------------
//------ set the survey complete cookie
function setCookie(c_name,value,expiredays)
{
var exdate=new Date();
exdate.setDate(exdate.getDate()+expiredays);
var cookie_str= c_name + "=" +escape(value)+((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
//alert(cookie_str);
document.cookie = cookie_str;
}

//-------------------------------------------------------------------------------------------------------------
//------ get the survey complete cookie -- if it exists
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 "";
}


//-------------------------------------------------------------------------------------------------------------
//------- check cookie info
function checkCookie( cookie_name )
{
surveyid=getCookie( cookie_name );
if (surveyid!=null && surveyid!="")
{ alert('You have already voted in this poll.'); }
else{ document.pollvote.submit(); }
} 


//-------------------------------------------------------------------------------------------------------------
//------- remove this cookie
function delete_cookie ( cookie_name )
{
  var cookie_date = new Date ( );  // current date & time
  cookie_date.setTime ( cookie_date.getTime() - 1 );
  document.cookie = cookie_name += "=; expires=" + cookie_date.toGMTString();
}