function emailCheck (emailStr) {
var checkTLD=1;
var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum|travel|mobi|asia|jobs|tel)$/;
var emailPat=/^(.+)@(.+)$/;
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("Your email address seems incorrect. \n Please check the email address you entered.");
return false;
}
var user=matchArray[1];
var domain=matchArray[2];
for (i=0; i<user.length; i++) {
if (user.charCodeAt(i)>127) {
alert("Your email address contains invalid characters. \n Please check the email address you entered.");
return false;
   }
}
for (i=0; i<domain.length; i++) {
if (domain.charCodeAt(i)>127) {
alert("Your email domain name contains invalid characters. \n Please check the email address you entered.");
return false;
   }
}

if (user.match(userPat)==null) {
alert("Your email username doesn't seem to be valid. \n Please check the email address you entered.");
return false;
}
var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) {
for (var i=1;i<=4;i++) {
if (IPArray[i]>255) {
alert("Your email destination IP address appears to be invalid!");
return false;
   }
}
return true;
}
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("Your email address domain name does not seem to be valid.");
return false;
   }
}
if (checkTLD && domArr[domArr.length-1].length!=2 && 
domArr[domArr.length-1].search(knownDomsPat)==-1) {
alert("Your email address must end in a domain code such as .com or .net \n or in a two letter " + "country code." );
return false;
}
if (len<2) {
alert("Your email address is missing a hostname! \n Please check the email address you entered.");
return false;
}
return true;
}

	
function FormValidator(theForm)
{   
  
  if (theForm.Name.value == "")
  {
    alert("Please enter your name.");
    theForm.Name.focus();
    return (false);
  }

  if (theForm.Name.value.length < 5)
  {
    alert("Please enter your full name.");
    theForm.Name.focus();
    return (false);
  }   
  
    if (theForm.email.value=="")
   {
		alert("Please Enter your Email Address.")
		theForm.email.focus()
		 return (false);
	}
	
   if (emailCheck(theForm.email.value)==false){
	    theForm.email.focus()
		return (false);
	}    

    return (true);
}