Simple javascript to compare date

function CompareDate()
{
var Date1 = document.getElementById('uxDate');
var SplitDate1 = Date1.value.split("/");
var dd1=SplitDate1[1];
var mm1=SplitDate1[0];
var yy1=SplitDate1[2];
var startDate = new Date(yy1,mm1-1,dd1);
var endDate = new Date();

if(startDate >= endDate)
{
alert("Start date should not greater then end date");
return false;
}
else
{
return true;
}

}