function resize_textarea(ev){
    //if (ev.keyCode != 13) return;
    var textarea = ev.target || ev.srcElement;
    var value = textarea.value;
    var lines = 1;
    for (var i = 0, l = value.length; i < l; i++){
        if (value.charAt(i) == '\n') lines++;
    }
    textarea.setAttribute("rows", lines+1);
    // window.status = lines;
}