function echeck(emailStr) {

var checkTLD=1;
var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
var emailPat=/^(.+)@(.+)$/;
var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
var validChars="\[^\\s" + specialChars + "\]";
var quotedUser="(\"[^\"]*\")";
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;

var atom=validChars + '+';
var word="(" + atom + "|" + quotedUser + ")";

var userPat=new RegExp("^" + word + "(\\." + word + ")*$");


var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");


var matchArray=emailStr.match(emailPat);

if (matchArray==null) {


alert("Email address seems incorrect (check @ and .'s)");
return false;
}
var user=matchArray[1];
var domain=matchArray[2];


for (i=0; i<user.length; i++) {
if (user.charCodeAt(i)>127) {
alert("Ths username contains invalid characters.");
return false;
   }
}
for (i=0; i<domain.length; i++) {
if (domain.charCodeAt(i)>127) {
alert("Ths domain name contains invalid characters.");
return false;
   }
}

// See if "user" is valid 

if (user.match(userPat)==null) {

// user is not valid

alert("The username doesn't seem to be valid.");
return false;
}

/* if the e-mail address is at an IP address (as opposed to a symbolic
host name) make sure the IP address is valid. */

var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) {

// this is an IP address

for (var i=1;i<=4;i++) {
if (IPArray[i]>255) {
alert("Destination IP address is invalid!");
return false;
   }
}
return true;
}

// Domain is symbolic name.  Check if it's valid.
 
var atomPat=new RegExp("^" + atom + "$");
var domArr=domain.split(".");
var len=domArr.length;
for (i=0;i<len;i++) {
if (domArr[i].search(atomPat)==-1) {
alert("The domain name does not seem to be valid.");
return false;
   }
}

/* domain name seems valid, but now make sure that it ends in a
known top-level domain (like com, edu, gov) or a two-letter word,
representing country (uk, nl), and that there's a hostname preceding 
the domain or country. */

if (checkTLD && domArr[domArr.length-1].length!=2 && 
domArr[domArr.length-1].search(knownDomsPat)==-1) {
alert("The address must end in a well-known domain or two letter " + "country.");
return false;
}

// Make sure there's a host name preceding the domain.

if (len<2) {
alert("This address is missing a hostname!");
return false;
}

// If we've gotten this far, everything's valid!
return true;
}

function trim(s){
         if((s==null)||(typeof(s)!='string')||!s.length)return'';return s.replace(/^\s+/,'').replace(/\s+$/,'')}


 
 
var one_day=1000*60*60*24
var one_month=1000*60*60*24*30
var one_year=1000*60*60*24*30*12

function displayage(yr, mon, day, unit, decimal, round){
	today=new Date()
	var pastdate=new Date(yr, mon-1, day)

	var countunit=unit
	var decimals=decimal
	var rounding=round

	finalunit=(countunit=="days")? one_day : (countunit=="months")? one_month : one_year
	decimals=(decimals<=0)? 1 : decimals*10

	if (unit!="years"){
		if (rounding=="rounddown")
			document.write(Math.floor((today.getTime()-pastdate.getTime())/(finalunit)*decimals)/decimals)
		else
			document.write(Math.ceil((today.getTime()-pastdate.getTime())/(finalunit)*decimals)/decimals)
	}else{
		yearspast=today.getFullYear()-yr-1
		tail=(today.getMonth()>mon-1 || today.getMonth()==mon-1 && today.getDate()>=day)? 1 : 0
		pastdate.setFullYear(today.getFullYear())
		pastdate2=new Date(today.getFullYear()-1, mon-1, day)
		tail=(tail==1)? tail+Math.floor((today.getTime()-pastdate.getTime())/(finalunit)*decimals)/decimals : Math.floor((today.getTime()-pastdate2.getTime())/(finalunit)*decimals)/decimals
		//document.write(yearspast)
			if ((yearspast>25) || (yearspast<15))
			{
				return false;
			}else{
				return true;
			}
	}
}