var button_on = document.createElement('img');
var button_go = document.createElement('img');
button_on.setAttribute('src','/img/logotchbt_off.gif');
button_go.setAttribute('src','/img/logotchbt_on.gif');
onload = function() {
    var sb = document.getElementById('logotch_button1');
    if(sb) {
        sb.onmouseover = function() { this.src='/img/logotchbt_on.gif'; }
        sb.onmouseout = function() { this.src='/img/logotchbt_off.gif'; }
        sb.onfocus = function() { this.src='/img/logotchbt_on.gif'; }
        sb.onblur = function() { this.src='/img/logotchbt_off.gif'; }
        sb.onclick = function() { this.src='/img/logotchbt_on.gif'; }
    };
};