loadImage1 = new Image();
loadImage1.src = "images/landing/bt_preview_on.gif";
staticImage1 = new Image();
staticImage1.src = "images/landing/bt_preview_off.gif";

loadImage2 = new Image();
loadImage2.src = "images/landing/bt_daq_on.gif";
staticImage2 = new Image();
staticImage2.src = "images/landing/bt_daq_off.gif";

loadImage3 = new Image();
loadImage3.src = "images/landing/bt_gwb_on.gif";
staticImage3 = new Image();
staticImage3.src = "images/landing/bt_gwb_off.gif";