function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}


function SaveRef()
{
	var ref = readCookie('origref');
	if ((ref == null) && (document.referrer != ''))
	{
		createCookie('origref',document.referrer, 60);
	}
}


function FillRef()
{
	var ref = readCookie('origref');
	var keyword = '';
  var GoogleRegex = new RegExp("google");
  if (ref.match(GoogleRegex)) 
  {
    document.getElementById('Other5').checked = true;
    var GoogleKW = new RegExp('[\\?|\\&]q=[\\w|-|%|\\+]+');
    var Gmatch = GoogleKW.exec(ref);
    if (Gmatch != null) 
    {
        document.getElementById('FindUsOther').value = Gmatch[0].substring(3, Gmatch[0].length);
    }
  } 
  else
  {
      var YahooRegex = new RegExp("yahoo");
      if (ref.match(YahooRegex))
      {
        document.getElementById('Other4').checked = true;
        var YahooKW = new RegExp('[\\?|\\&]p=[\\w|-|%|\\+]+');
        var Ymatch = YahooKW.exec(ref);
        if (Ymatch != null) 
        {
            document.getElementById('FindUsOther').value = Ymatch[0].substring(3, Ymatch[0].length);
        }
      } 
      else
      {
        document.getElementById('Other').value = ref;
      }
  }
	document.getElementById('RefURL').value = ref;
}