var StrTim = new Date();
StrTim.setTime(Date.parse("23 Feb 2010 00:00"));
//alert(StrTim.toLocaleString())
StrTim = StrTim.getTime()
Timer = new Date().getTime();
Delta = (Timer-StrTim)
alert(Timer+' - '+StrTim+' = '+Delta)
Delta = Delta/(75*60*1000);
Delta =parseInt(Delta)
alert(Delta);