function adShow(datStart,datEnd,strURL,strAd) {
  var nowDate = new Date();
  var day = nowDate.getUTCDate();
  var month = nowDate.getUTCMonth();
  var correctedMonth = month + 1;  //month - JavaScript starts at "0" for January, so we add "1"
  if (correctedMonth < 10) { correctedMonth = "0" + correctedMonth; }
  if (day < 10) { day = "0" + day; }
  var year = nowDate.getYear();
  if (year < 1900) { year = year + 1900; }
  var GMTdate = year + "" + correctedMonth + "" + day;
  var strAdHTML = '<p align="center"><a href="' + strURL + '" target="_blank"><img border="0" src="ads/' + strAd + '"></a></p>'
  if ((GMTdate <= datEnd) && (GMTdate >= datStart)) { document.write(strAdHTML) }
}
adShow("20100715","20100930","http://www.eccopanelheater.com.au","eccopanel.jpg");
adShow("20091001","20110531","http://www.gobabyhire.com.au","GoBaby.jpg");
adShow("20100710","20101031","http://www.milkinaminute.com","miam.jpg");
adShow("20100710","20110228","http://www.simplesolutionsinternational.com","simplesol.jpg");
adShow("20091001","20100831","http://www.smallp.com.au","smallp.jpg");
adShow("20100710","20110228","http://www.twinsane.com.au","twinsane.jpg");