function Validate() {
var return_value = true;
var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
if ($("invite_name").value =="")
  {
    $("name_error").style.display='';
    return_value = false;
  }
else
  {
    $("name_error").style.display='none';
  }
if (!emailPattern.test($("invite_email").value))
  {
    $("email_error").style.display='';
    return_value = false;
  }
else
  {
    $("email_error").style.display='none';
  }
return return_value;
}

//Cookie extension to Prototype
var Cookie = {
  set: function(name, value, daysToExpire) {
    var expire = '';
    if (daysToExpire != undefined) {
      var d = new Date();
      d.setTime(d.getTime() + (86400000 * parseFloat(daysToExpire)));
      expire = '; expires=' + d.toGMTString();
    }
    return (document.cookie = escape(name) + '=' + escape(value || '') + expire+"; path=/");
  },
  get: function(name) {
    var cookie = document.cookie.match(new RegExp('(^|;)\\s*' + escape(name) + '=([^;\\s]*)'));
    return (cookie ? unescape(cookie[2]) : null);
  },
  erase: function(name) {
    var cookie = Cookie.get(name) || true;
    Cookie.set(name, '', -1);
    return cookie;
  },
  accept: function() {
    if (typeof navigator.cookieEnabled == 'boolean') {
      return navigator.cookieEnabled;
    }
    Cookie.set('_test', '1');
    return (Cookie.erase('_test') === '1');
  }
}

//populate login email field with an email from cookies if any
function get_email(target_id) {
  if (Cookie.get("email")) 
  {
    $(target_id).value = Cookie.get("email");
  }
}

//sets a cookie with referer info
function get_referrer(page)
{
  if (!Cookie.get("count"))
  {
    if (!Cookie.get("q_string")) {Cookie.set("q_string",window.top.location.search)} ;
    if (!Cookie.get("referrer")) {Cookie.set("referrer",document.referrer)};
    new Ajax.Request('/public/vlogger',
    {
      method:'get',
      onSuccess: function(transport){
      if (!Cookie.get("visit")) {Cookie.set("visit",transport.responseText,30);}
      },
      parameters:'page='+page
    });
  }
}

//toggles count cookie
function cout_cookie(element)
{
  if (Cookie.get("count"))
  {
    Cookie.erase('count');
    element.innerHTML="Don't count this browser"
  }
  else
  {
    Cookie.set('count','not',3000);
    element.innerHTML="Count this browser"
  }
}