function emailCheck (emailStr) {

<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->

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) {
	return false
}

var user=matchArray[1]
var domain=matchArray[2]

if (user.match(userPat)==null) {
    return false
}

var IPArray=domain.match(ipDomainPat)
if (IPArray!=null) {
	  for (var i=1;i<=4;i++) {
	    if (IPArray[i]>255) {
			return false
	    }
    }
    return true
}

var domainArray=domain.match(domainPat)
if (domainArray==null) {
    return false
}

var atomPat=new RegExp(atom,"g")
var domArr=domain.match(atomPat)
var len=domArr.length
if (domArr[domArr.length-1].length<2 || 
    domArr[domArr.length-1].length>4) {
   return false
}

if (len<2) {
   return false
}

return true;
}

function submitform() {

	if (document.comments_form.author.value == "") {
		alert("Please provide a name.");
		document.comments_form.author.focus();
		return false;
	}
	//else if (document.comments_form.email.value == "") {
		//alert("Please provide an email address.");
		//document.comments_form.email.focus();
		//return false;
	//}
	else if (document.comments_form.email.value != "" && !emailCheck(document.comments_form.email.value)) {
		alert("The email address you have entered is invalid.");
		document.comments_form.email.focus();
		return false;
	}
	else if (document.comments_form.text.value == "") {
		alert("Please enter your comment to continue.");
		document.comments_form.text.focus();
		return false;
	}
	else {
		if (document.comments_form.bakecookie.checked) {
			rememberMe();
		}
		else {
			forgetMe();
		}
		return true;
	}
}

function fillinhttp() {
	if (document.comments_form.url.value == "")	{
		document.comments_form.url.value = "http://";
	}
}

function getridofhttp() {
	if (document.comments_form.url.value == "http://") {
		document.comments_form.url.value = "";
	}
}