// Copyright (c) 2001, Pawel Kazakow
// http://www.pkworld.de

var oldlength;
var oldvalue;

function checklength(name, length)
{
 var obj = document.forms[0].elements[name];

 if (obj.value.length > length)
 {
	 obj.value = oldvalue;
	// obj.value = obj.value.substr(0, length);
 }
 else
 {
	 oldvalue = obj.value;
 }

 if (oldlength != obj.value.length)
 {
	  document.forms[0].elements.msg.value = length - obj.value.length + " von " + length + " Zeichen stehen noch zur Verfügung!"
	  oldlength = obj.value.length;
 }
 setTimeout("checklength('"+name+"', "+length+")", 30)
}