function setCookie( sName, sValue, nDays ) 
{
  var expires = "";
  if ( nDays ) 
  {
    var d = new Date();
    d.setTime( d.getTime() + nDays * 24 * 60 * 60 * 1000 );
    expires = "; expires=" + d.toGMTString();
  }
  document.cookie = sName + "=" + sValue + expires + "; path=/";
};

function getCookie(sName) 
{
  var re = new RegExp( "(\;|^)[^;]*(" + sName + ")\=([^;]*)(;|$)" );
  var res = re.exec( document.cookie );
  return res != null ? res[3] : null;
};

function removeCookie( name ) 
{
  setCookie( name, "", -1 );
};


function submitLogin(val)
{
  setCookie( "email", val, 30);
}

function checkEmail()
{
  var email_address = getCookie("email");
  if (email_address)
  {
    if (email_address != "undefined")
    {
      document.forms[0].email.value = email_address;
    }
  }
}