new Date()问题在ie8下面的处理方法

<script> function getDays(strDateStart,strDateEnd){   var strSeparator = "-";    var oDate1; var oDate2; var iDays;   oDate1= strDateStart.split(strSeparator);   oDate2= strDateEnd.split(strSeparator);   var strDateS = new Date(oDate1[0], oDate1[1]-1, oDate1[2]);   var strDateE = new Date(oDate2[0], oDate2[1]-1, oDate2[2]);   iDays = parseInt(Math.abs(strDateS - strDateE ) / (1000*24*3600))   return iDays ; }  alert(getDays('2014-02-26','2014-08-18')) </script>