js日期比较

	function dateComp(d1,d2)
	{
		
		 var date1= new Date(Date.parse(d1.replace("-","/"))); 
		 
		 var date2= new Date(Date.parse(d2.replace("-","/"))); 
		 
		 alert(date1.getTime() +" " +date2.getTime());
		 
		 var r = (date1-date2)/(24*60*60*1000);
		
		return r;

	}
	
	function fun()
	{
		 var d1 ="2012-12-03";
		 var d2 ="2013-01-03";
		 
 		 var d = dateComp(d1,d2);
		 alert(d);
	}