/*
 * 
 * (C) 2006 Enrique Trias
 * 
 * This work may not be copied, modified, re-published, 
 * uploaded, executed, or distributed in any way, in any 
 * medium, whether in whole or in part, without prior 
 * written permission
 * 
 */ 

function SetCookie( name, value, expires, path, domain, secure ) {
  // set time, it's in milliseconds
  var today = new Date();
  today.setTime( today.getTime() );
  
  // if the expires variable is set, make the correct 
  // expires time, the current script below will set 
  // it for x number of days, to make it for hours, 
  // delete * 24, for minutes, delete * 60 * 24

  if ( expires ) {
    expires = expires * 1000 * 60 * 60 * 24;
  }
  var expires_date = new Date( today.getTime() + (expires) );
  
  document.cookie = name + "=" +getURI( value ) +
    ( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + 
    ( ( path ) ? ";path=" + path : "" ) + 
    ( ( domain ) ? ";domain=" + domain : "" ) +
    ( ( secure ) ? ";secure" : "" );
}

// this function gets the cookie, if it exists
function GetCookie( name ) {
  var start = document.cookie.indexOf( name + "=" );
  var len = start + name.length + 1;
  if ( ( !start ) &&
       ( name != document.cookie.substring( 0, name.length ) ) ) {
    return null;
  }
  if ( start == -1 ) 
    return null;
  var end = document.cookie.indexOf( ";", len );
  if ( end == -1 ) 
    end = document.cookie.length;
  return decodeURI( document.cookie.substring( len, end ) );
}

// this deletes the cookie when called
function DeleteCookie( name, path, domain ) {
  if ( GetCookie( name ) ) document.cookie = name + "=" +
    ( ( path ) ? ";path=" + path : "") +
    ( ( domain ) ? ";domain=" + domain : "" ) +
    ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}

/*  sample js code
 
<script type="text/javascript">
// remember, these are the possible parameters for SetCookie:
// name, value, expires, path, domain, secure
SetCookie( 'test', 'it works', '', '/', '', '' );
if ( GetCookie( 'test' ) ) alert( GetCookie('test'));
// and these are the parameters for DeleteCookie:
// name, path, domain
// make sure you use the same parameters in Set and Delete Cookie.
DeleteCookie('test', '/', '');
( GetCookie( 'test' ) ) ? alert( GetCookie('test')) : 
alert( 'it is gone');
</script>

*/