<script> function addTesto(sml) { var obj=document.prova.testo; if (document.all) { obj.focus(); var sel=document.selection; var rng=sel.createRange(); rng.colapse; rng.text=sml; } else if(obj.selectionEnd){ var lng=obj.textLength; var from=obj.selectionStart; var to=obj.selectionEnd; obj.value=obj.value.substring(0,from)+sml+obj.valu e.substring(to,lng) } else obj.value+=sml; obj.focus(); } </script> <form name=”prova”> <textarea name=”testo”></textarea> <input type=”button” value=”:)” onclick=”addTesto(‘Testo’)” /> </form>