function bts() {
  var w = window;


    var proto = w.location.protocol.toLowerCase();
    if ('http:' != proto && 'https:' != proto) {
      proto = 'http:';
    }

    if(w.bts_amount){
  		var url = proto +
                "//www2.higherengine.com/bts/" + escape(w.svaid) + "/bts.php" + 
                "?amt=" + escape(w.bts_amount);
		}else{
  		var url = proto +
                "//www2.higherengine.com/bts/" + escape(w.svaid) + "/bts.php" + 
                "?amt=0";
		}
    if (w.svaid) {
      url = url + "&svaid=" + escape(w.svaid);
    }
    if (w.origin) {
      url = url + "&origin=" + escape(w.origin);
    }

    if (w.bts_orderno) {
      url = url + "&bts_orderno=" + escape(w.bts_orderno);
    }



    document.write('<ifr' + 'ame' +
                   ' name="bts_frame"' +
     ' width="0"' +
     ' height="0"' +
     ' src="' + url + '"' +
     ' frameborder="0"' +
                   ' marginwidth="0"' +
                   ' marginheight="0"' +
                   ' vspace="0"' +
                   ' hspace="0"' +
                   ' allowtransparency="true"' +
                   ' scrolling="no">');
    document.write('<i' + 'mg height="1" width="1" border="0" ' + 
                   'src="' + url + '"' +
                   ' />');
    document.write('</ifr' + 'ame>');

  w.amount = null;
  w.svaid = null;
  w.origin = null;
  w.bts_orderno = null;
}


bts();