function fixupUrl(url)
      {
        var sUrl = url.value;
        if(sUrl==null || sUrl == '') return;
        
        // trim lead spaces
        while (sUrl.substring(0,1) == ' ') sUrl = sUrl.substring(1, sUrl.length);
		while (sUrl.substring(sUrl.length-1, sUrl.length) == ' ') sUrl = sUrl.substring(0,sUrl.length-1);
        
        if(sUrl.toLowerCase().indexOf('http://')!=0 && sUrl.toLowerCase().indexOf('https://')!=0)
        {
          sUrl = 'http://'+sUrl;
        }
        url.value = sUrl;
      }