function setCookie( name, value, expires, path, domain, secure ) {
    var today = new Date();
    today.setTime( today.getTime() );
    if ( expires ) expires = expires * 1000 * 60 * 60 * 24;
    var expires_date = new Date( today.getTime() + (expires) );
    
    document.cookie = name + "=" +escape( value ) +
                      ( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) +
                      ( ( path ) ? ";path=" + path : "" ) +
                      ( ( domain ) ? ";domain=" + domain : "" ) +
                      ( ( secure ) ? ";secure" : "" );
  }
  
  function getCookie( check_name ) {
  	var a_all_cookies = document.cookie.split( ';' );
  	var a_temp_cookie = '';
  	var cookie_name = '';
  	var cookie_value = '';
  	var b_cookie_found = false;
  
  	for ( i = 0; i < a_all_cookies.length; i++ )
  	{
  		a_temp_cookie = a_all_cookies[i].split( '=' );
  		cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');

  		if ( cookie_name == check_name )
  		{
  			b_cookie_found = true;
  			if ( a_temp_cookie.length > 1 ) {
  				cookie_value = unescape( a_temp_cookie[1].replace(/^\s+|\s+$/g, '') );
  			}
  			return cookie_value;
  			break;
  		}
  		a_temp_cookie = null;
  		cookie_name = '';
  	}
  	if ( !b_cookie_found ) return null;
  }
  

  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";
    }
  }