var button_on = document.createElement('img');
var button_go = document.createElement('img');
button_on.setAttribute('src','images/bhealth-safetyo.gif');
button_go.setAttribute('src','images/bhealth-safety.gif');

var button_on2 = document.createElement('img');
var button_go2 = document.createElement('img');
button_on2.setAttribute('src','images/bserviceso.gif');
button_go2.setAttribute('src','images/bservices.gif');

var button_on3 = document.createElement('img');
var button_go3 = document.createElement('img');
button_on3.setAttribute('src','images/btrainingo.gif');
button_go3.setAttribute('src','images/btraining.gif');

onload = function() {
    var sb = document.getElementById('hands');
    if(sb) {
        sb.onmouseover = function() { this.src='images/bhealth-safetyo.gif'; }
        sb.onmouseout = function() { this.src='images/bhealth-safety.gif'; }
        sb.onfocus = function() { this.src='images/bhealth-safetyo.gif'; }
        sb.onblur = function() { this.src='images/bhealth-safety.gif'; }
        sb.onclick = function() { this.src='images/bhealth-safetyo.gif'; }
    }
    var mb = document.getElementById('serv');
    if(mb) {
        mb.onmouseover = function() { this.src='images/bserviceso.gif'; }
        mb.onmouseout = function() { this.src='images/bservices.gif'; }
        mb.onfocus = function() { this.src='images/bserviceso.gif'; }
        mb.onblur = function() { this.src='images/bservices.gif'; }
        mb.onclick = function() { this.src='images/bserviceso.gif'; }
	}
    var tb = document.getElementById('train');
    if(tb) {
        tb.onmouseover = function() { this.src='images/btrainingo.gif'; }
        tb.onmouseout = function() { this.src='images/btraining.gif'; }
        tb.onfocus = function() { this.src='images/btrainingo.gif'; }
        tb.onblur = function() { this.src='images/btraining.gif'; }
        tb.onclick = function() { this.src='images/btrainingo.gif'; }
}

}