function show(layID) {
  var myLayer = document.getElementById(layID);

   myLayer.style.visibility="visible";
 
}

function hizde(layID) {
  var myLayer = document.getElementById(layID);

   myLayer.style.visibility="hidden";
 
}

function clearfield (val,element) {
	//alert("mike");
   if(element.value==val)element.value="";
}

function mailtest() {
	//alert ("mailtest");
var formid = document.getElementById("nlemail");
if (formid.value == ""){      
      //  show('error'); 
				alert ("Please enter a valid email adress");

	return false;       
}

if (formid.value == "Join our Mailing List"){   
      // show('error');
	   		alert ("Please enter a valid email adress");

  	return false;       
}

if (formid.value.indexOf ('@',0) == -1 || 
	formid.value.indexOf ('.',0) == -1){      
        //show('error');  
		alert ("Please enter a valid email adress");
	return false;
}

else {
	return true;
} 

}