To check whether given date is less than current date

Wed, 26 Mar 2008 09:17:58 +0000

function IslessThanCurrentYear(year)
{
var d = new Date();
currentyear = d.getFullYear();

if (year>currentyear)
{
return false;
}
else
{
return true;
}

}

To check leap year

Wed, 26 Mar 2008 09:16:38 +0000

function IsLeapYear(year)
{
if ((year%4)==0)
{
if ((year%100==0) && (year%400)!=0)
{
return false;
}
else
{
return true;
}
}
else
{
return false;
}
}