function check()
{
 res = true;
 a = document.newad;
 if(a.txtname.value == ''){res = false;}
 if(a.txtvorname.value == ''){res = false;}

reg = new RegExp('^([a-zA-Z0-9\\-\\.\\_]+)'+    //Name
                  '(\\@)'+                       //@-Zeichen
                  '([a-zA-Z0-9\\-\\.]+)'+        //Domain
                  '(\\.)'+                       //Punkt
                  '([a-zA-Z]{2,4})$');           //TLD
if(reg.test(a.txtmail.value) == false){res = false;}

 if(a.txtstrasse.value == ''){res = false;}
 if(a.txtplz.value == ''){res = false;}
 if(a.txtort.value == ''){res = false;}
 if(a.txttext.value == ''){res = false;}
 if(a.btn_check.checked == false){res = false;}

 if(res == false){alert('Bitte fuelle das Formular vollstaendig aus und lese unbedingt die Nutzungsbedingungen!')}
 return res;
}

function checkmail()
{
 res = true;
 a = document.sendmail;
 if(a.betreff.value == '') {res = false;}
 if(a.mailtext.value == '') {res = false;}
 
 if(res == false) {alert('Bitte fuelle beide Felder aus!')}
 return res;
}

function checkkey()
{
 res = true;
 a = document.erase;
 if(a.validator.value == '') {res = false;}
 if(a.ok.checked == false){res = false;}
 
 if(res == false) {alert('Bitte gib den Schluessel ein und bestaetige das Loeschen des Eintrages!')}
 return res;
}

var max = 600;

document.newad.zaehler.value = max;
document.newad.txttext.focus();

function count(e)
{

	if (!e.which) keyCode = event.keyCode; // ie5+ op5+
	else keyCode = e.which; // nn6+

	if (document.newad.txttext.value.length<max+1)

	document.newad.zaehler.value = max-document.newad.txttext.value.length;
	else
	{
		document.newad.txttext.value = document.newad.txttext.value.substring(0,max);
		document.newad.zaehler.value = 0;
	}
}