function Set_Cookie( 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" : "" );
}

// this function gets the cookie, if it exists
function Get_Cookie( 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 unescape( document.cookie.substring( len, end ) );
}

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

Set_Cookie( 'test', 'none', '', '/', '', '' );
if ( Get_Cookie( 'test' ) ) {
 Delete_Cookie('test', '/', '');
} else {
 window.location="no_cookie.php";
}