function emailCheck (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;
	   }
}


if (user.match(userPat)==null) {
	alert("The username doesn't seem to be valid.");
	return false;
}

var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) {
	for (var i=1;i<=4;i++) {
		if (IPArray[i]>255) {
			alert("Destination IP address is 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("The 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("The address must end in a well-known domain or two letter " + "country.");
	return false;
}

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

return true;
}




function FrontPage_Form1_Validator(theForm)
{
	
	 if (theForm.date.value == "")
  {
    alert("Please select a date for the \"Date\" field.");
    theForm.date.focus();
    return (false);
  }


  if (theForm.name.value == "")
  {
    alert("Please enter a value for the \"Name\" field.");
    theForm.name.focus();
    return (false);
  }
  
  
    if (theForm.email.value == "")
  {
    alert("Please enter a value for the \"Email\" field.");
    theForm.email.focus();
    return (false);
  }


var checkOK = "0123456789-.";
  var checkStr = theForm.phone.value;
  var allValid = true;
  var validGroups = true;
  var decPoints = 0;
  var allNum = "";
  for (i = 0;  i < checkStr.length;  i++)
  {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
        break;
    if (j == checkOK.length)
    {
      allValid = false;
      break;
    }
    if (ch == ".")
    {
      allNum += ".";
      decPoints++;
    }
    else
      allNum += ch;
  }
  if (!allValid)
  {
    alert("Please enter only digit characters in the \"phone\" field.");
    theForm.phone.focus();
    return (false);
  }

  if (decPoints > 1 || !validGroups)
  {
    alert("Please enter a valid number in the \"phone\" field.");
    theForm.phone.focus();
    return (false);
  }
  
   if (theForm.city.value == "")
  {
    alert("Please enter a value for the \"City\" field.");
    theForm.city.focus();
    return (false);
  }
   
   
  
  



	return (true);
  }


function ShowDiv(){
	gE("tweet").style.display = 'block';
}
function HideDiv(){
	gE("tweet").style.display = 'none';
}


function gE(objId)
{
  if (document.getElementById(objId))
  {
     return document.getElementById(objId);
  }
   return null;
}