function echeck(str) {
		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail Address")
		   return false
		}
		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail Address")
		   return false
		}
		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail Address")
		    return false
		}
		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail Address")
		    return false
		 }
		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail Address")
		    return false
		 }
		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail Address")
		    return false
		 }
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail Address")
		    return false
		 }
 		 return true					
	}

function ValidateForm(){
	var emailID=document.AddUser.email;
	var dt=document.AddUser.dob;
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email Address")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	
	if (isDate(dt.value)==false){
		dt.focus()
		return false
	}
	if (document.AddUser.email.value != document.AddUser.conemail.value)
		{
		alert ("Your email confirmation does not match.")
		document.AddUser.conemail.focus();
		return false;
		}
	if (document.AddUser.firstname.value == "")
		{
		alert ("You must enter your First Name.")
		document.AddUser.firstname.focus();
		return false;
		}
	if (document.AddUser.lastname.value == "")
		{
		alert ("You must enter your Last Name.")
		document.AddUser.lastname.focus();
		return false;
		}
	if (document.AddUser.plocation.value == "")
		{
		alert ("You must enter your Location Postcode or BFPO Number.")
		document.AddUser.plocation.focus();
		return false;
		}
	
	if (document.AddUser.username.value == "")
		{
		alert ("You must enter a user name.")
		document.AddUser.username.focus();
		return false;
		}
	
	
	if(document.AddUser.pword.value=="")
		{alert("You must enter a password.");
		document.AddUser.pword.focus();
		return false;
		}
		// allow ONLY alphanumeric keys, no symbols or punctuation
		// this can be altered for any "checkOK" string you desire
		var checkOK = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
		var checkStr = document.AddUser.pword.value;
		var allValid = true;
		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 (!allValid)
		{
		alert("Please enter only letter and numeric characters in the password field.");
		document.AddUser.pword.focus();
		return (false);
		}

	if (document.AddUser.pword.value.length < 7)
		{
		alert ("Please enter a password of at least 7 characters!");
		return false;
		}
	return true
 }