function composition1validLetter(e) {
            var key;
            var keychar;

            if (window.event) key = window.event.keyCode;
            else if (e) key = e.which;
            else return true;

            keychar = String.fromCharCode(key);

            if ((key==null) || (key==0) || (key==8) || (key==9) || (key==13) || (key==27) ) return true;
            else if ((("äöüabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÜß").indexOf(keychar) > -1)) return true;

            return false;
        }
function composition1validNumber(e) {
            var key;
            var keychar;

            if (window.event) key = window.event.keyCode;
            else if (e) key = e.which;
            else return true;

            keychar = String.fromCharCode(key);

            if ((key==null) || (key==0) || (key==8) || (key==9) || (key==13) || (key==27) ) return true;
            else if ((("0123456789").indexOf(keychar) > -1)) return true;

            return false;
        }
function composition1validFloatNumber(e) {
            var key;
            var keychar;

            if (window.event) key = window.event.keyCode;
            else if (e) key = e.which;
            else return true;

            keychar = String.fromCharCode(key);

            if ((key==null) || (key==0) || (key==8) || (key==9) || (key==13) || (key==27) ) return true;
            else if ((("0123456789,").indexOf(keychar) > -1)) return true;

            return false;
        }