var mainmessage=' and then press the Subscribe button.';

function NLecheck(str) {
                // Function to validate e-mail address to the following format:
		// name@domain.domaintype
		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		var message='Invalid Email address. \n\nPlease enter a valid E-mail address' + mainmessage;
		if (str.indexOf(at)==-1){
		   alert(message)
		   return false
		}
		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert(message)
		   return false
		}
		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert(message)
		    return false
		}
      	        if (str.indexOf(at,(lat+1))!=-1){
		    alert(message)
		    return false
		}
      	        if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert(message)
		    return false
		}
 	        if (str.indexOf(dot,(lat+2))==-1){
		    alert(message)
		    return false
 	        } 
		if (str.indexOf(" ")!=-1){
		    alert(message)
		    return false
		}
		return true					
	}

function NLValidateForm(){
        var clientName   = document.NewsletterForm.name
        var clientEmail  = document.NewsletterForm.email
 

        if ((clientName.value==null)||(clientName.value=="")){
		alert('Please enter your name' + mainmessage)
		clientName.focus()
		return false 
	}
	if ((clientEmail.value==null)||(clientEmail.value=="")){
		alert('Please enter your E-mail address' + mainmessage);
		clientEmail.focus()
		return false
	}
	if (NLecheck(clientEmail.value)==false){
		clientEmail.focus()
		return false
	}
        return true;
 }

function NLSubmit()
{
  if (NLValidateForm()==true)
  {
    document.NewsletterForm.submit();
  }
}