// JavaScript Document

function checknewsletterform(step){
	if(step=="f1"){
		if(window.document.newsletterform.vorname.value==""){ 
			alert("Bitte Vorname eintragen!"); 
			return false; 
		}
		if(window.document.newsletterform.nachname.value==""){ 
			alert("Bitte Nachname eintragen!"); 
			return false; 
		}
		if(window.document.newsletterform.email.value==""){ 
			alert("Bitte E-Mail eintragen!"); 
			return false; 
		} 
		document.getElementById('nletmask1').style.display='none';
		document.getElementById('nletmask2').style.display='block';
		document.getElementById('nletmask3').style.display='none';
		return false;	
	};
	//
	if(step=="f2"){		
		document.getElementById('nletmask1').style.display='none';
		document.getElementById('nletmask2').style.display='none';
		document.getElementById('nletmask3').style.display='block';
		document.getElementById('antwortname').innerHTML=window.document.newsletterform.vorname.value +" "+ window.document.newsletterform.nachname.value;
		window.document.newsletterform.chknr.value="ok";
		return true;
	}
	if(step=="f3"){
		document.getElementById('nletmask1').style.display='none';
		document.getElementById('nletmask2').style.display='none';
		document.getElementById('nletmask3').style.display='none';
		document.getElementById('nletmask1').style.display='block';
		window.document.newsletterform.vorname.value="";
		window.document.newsletterform.nachname.value="";
		window.document.newsletterform.email.value="";
	}	
}