function checkNLForm() {
  
	//alert('checkNLForm');
    var theForm = document.forms['nlForm'];
      
    if( (theForm.email.value=="") || (theForm.email.value=="Enter your email") ){
		alert('Please fill in your email address');
		theForm.email.focus();
		return false;
		
	} else {
		
		var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
		var str=theForm.email.value.trim();
		if(!filter.test(str)){
			alert('Please check you email address');
			theForm.email.focus();
			return false;
		}
	}

	return true;

}

String.prototype.trim = function() { return this.replace(/^\s+|\s+$/g, ""); };