<!--
imgNames = new Array(
"images/header.jpg"
)
loadImgs = new Array()
for(i=0; i < imgNames.length; i++) {
  loadImgs[i] = new Image;
  loadImgs[i].src = imgNames[i];
}
if (document.images) {
image1on = new Image();
image1on.src = "images/topnavs_about_on.jpg";
image1off = new Image();
image1off.src = "images/topnavs_about_off.jpg";
image2on = new Image();
image2on.src = "images/topnavs_ourwork_on.jpg";
image2off = new Image();
image2off.src = "images/topnavs_ourwork_off.jpg";
image3on = new Image();
image3on.src = "images/topnavs_findus_on.jpg";
image3off = new Image();
image3off.src = "images/topnavs_findus_off.jpg";
image4on = new Image();
image4on.src = "images/topnavs_contactus_on.jpg";
image4off = new Image();
image4off.src = "images/topnavs_contactus_off.jpg";
<!-- categories // -->
image5on = new Image();
image5on.src = "images/categories_archi_on.jpg";
image5off = new Image();
image5off.src = "images/categories_archi_off.jpg";
image6on = new Image();
image6on.src = "images/categories_cabinet_on.jpg";
image6off = new Image();
image6off.src = "images/categories_cabinet_off.jpg";
image7on = new Image();
image7on.src = "images/categories_comm_on.jpg";
image7off = new Image();
image7off.src = "images/categories_comm_off.jpg";
image8on = new Image();
image8on.src = "images/categories_church_on.jpg";
image8off = new Image();
image8off.src = "images/categories_church_off.jpg";
image9on = new Image();
image9on.src = "images/categories_boats_on.jpg";
image9off = new Image();
image9off.src = "images/categories_boats_off.jpg";
}
function turnOn(imageName) {
 if (document.images) {
  document[imageName].src = eval(imageName + "on.src");
 }
}
function turnOff(imageName) {
 if (document.images) {
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 }
}
// -->