// format date as dd-mmm-yy. Example: 12-Jan-99

function date_ddmmmyy(date)
{
var d = date.getDate();
var m = date.getMonth() + 1;
var y = date.getYear();

// handle different year values returned by IE and NS in the year 2000.

if(y >= 2000)
{
y -= 2000;
}
if(y >= 100)
{
y -= 100;
}

var mmm = 
( 1==m)?'Jan':( 2==m)?'Feb':(3==m)?'Mar':
( 4==m)?'Apr':( 5==m)?'May':(6==m)?'Jun':
( 7==m)?'Jul':( 8==m)?'Aug':(9==m)?'Sep':
(10==m)?'Oct':(11==m)?'Nov':'Dec';

return "" + (d<10?"0"+d:d) + "-" + mmm + "-" + (y<10?"0"+y:y);
}

// get last modified date of the current document.

function date_lastmodified()
{
var lmd = document.lastModified;
var s   = "Unknown";
var d1;

// check if we have a valid date before proceeding

if(0 != (d1=Date.parse(lmd)))
{
s = "" + date_ddmmmyy(new Date(d1));
}

return s;
}