function RTrim(s)
{
	var i;

	for (i=s.value.length-1; s.value.charCodeAt(i)==32; i--) {}
	s.value=s.value.substring(0,i+1);

	return s.value;
}

function Check()
{
	var answer="";
	
	with (document.forms.kontaktformular)
	{
		
		if (RTrim(vornameInput) == "")
		{
			answer+="- Vorname\n";
		}
		if (RTrim(nameInput) == "")
		{
			answer+="- Nachname\n";
		}
		
		if (RTrim(mailInput) == "")
		{
			answer+="- E-Mail\n";
		}
		
		if (RTrim(spamInput) == "")
		{
			answer+="- Spam\n";
		}
		if (spamInput.value != spamSum.value)
		{
			answer+="- Bitte addieren Sie die Zahlen korrekt\n";	
		}
		
		if (RTrim(textarea1) == "")
		{
			answer+="- Nachricht";
		}
		else
		{
			var s = mailInput.value;
			if (s != '')
			{
				res = (s.search('@') >= 1 &&
				s.lastIndexOf('.') > s.search('@') &&
				s.lastIndexOf('.') >= s.length-5)
			
				if (res == false)
				{
					answer+='- gültige E-Mail-Adresse\n';
				}
			}
		}
		
	}
	
	if (answer != "")
	{
		alert('Bitte füllen Sie alle folgenden Felder aus:\n\n'+answer);
		return false;
	}
}