function add_emotion(event) { 
    comment = document.getElementById('comment'); 
    comment.value  += " " + this.alt + " "; 
    comment.focus(); 
}
function load_emotion() {
    var emotion = document.getElementById('emotion');
    if (emotion) {
        var emotions = emotion.getElementsByTagName('img');
        for (i = 0; i < emotions.length; i++) {
            emotions[i].onclick = add_emotion;
        }
    }
}
if (document.all) {
    attachEvent('onload', load_emotion);
}
else {
    addEventListener('load', load_emotion, false);
}