button_oilburners_off = new Image();
button_oilburners_off.src = "images/button_oilburners_off.gif";
button_oilburners_on = new Image();
button_oilburners_on.src = "images/button_oilburners_on.gif";

button_gasburners_off = new Image();
button_gasburners_off.src = "images/button_gasburners_off.gif";
button_gasburners_on = new Image();
button_gasburners_on.src = "images/button_gasburners_on.gif";

button_dualfuelburners_off = new Image();
button_dualfuelburners_off.src = "images/button_dualfuelburners_off.gif";
button_dualfuelburners_on = new Image();
button_dualfuelburners_on.src = "images/button_dualfuelburners_on.gif";

button_go_off = new Image();
button_go_off.src = "images/button_go_off.gif";
button_go_on = new Image();
button_go_on.src = "images/button_go_on.gif";

button_more_off = new Image();
button_more_off.src = "images/button_more_off.gif";
button_more_on = new Image();
button_more_on.src = "images/button_more_on.gif";

button_relatedlink_off = new Image();
button_relatedlink_off.src = "images/button_relatedlink_off.gif";
button_relatedlink_on = new Image();
button_relatedlink_on.src = "images/button_relatedlink_on.gif";

button_downloadlink_off = new Image();
button_downloadlink_off.src = "images/button_downloadlink_off.gif";
button_downloadlink_on = new Image();
button_downloadlink_on.src = "images/button_downloadlink_on.gif";