// preload images:
if (document.images) {
but1 = new Image(125,95); but1.src = "images/virtualtour/pic1_on.jpg";
but2 = new Image(125,95); but2.src = "images/virtualtour/pic2_on.jpg";
but3 = new Image(125,95); but3.src = "images/virtualtour/pic3_on.jpg";
but4 = new Image(125,95); but4.src = "images/virtualtour/pic4_on.jpg";
but5 = new Image(125,95); but5.src = "images/virtualtour/pic5_on.jpg";
but6 = new Image(125,95); but6.src = "images/virtualtour/pic6_on.jpg";
but7 = new Image(125,95); but7.src = "images/virtualtour/pic7_on.jpg";

but1a = new Image(125,95); but1a.src = "images/virtualtour/pic1_off.jpg";
but2a = new Image(125,95); but2a.src = "images/virtualtour/pic2_off.jpg";
but3a = new Image(125,95); but3a.src = "images/virtualtour/pic3_off.jpg";
but4a = new Image(125,95); but4a.src = "images/virtualtour/pic4_off.jpg";
but5a = new Image(125,95); but5a.src = "images/virtualtour/pic5_off.jpg";
but6a = new Image(125,95); but6a.src = "images/virtualtour/pic6_off.jpg";
but7a = new Image(125,95); but7a.src = "images/virtualtour/pic7_off.jpg";
}

function hiLite(imgName,imgObjName) {
if (document.images) {
  document.images[imgName].src = eval(imgObjName + ".src");
}}