function newImage(arg) {
if (document.images) {
rslt = new Image();
rslt.src = arg;
return rslt;
}
}

function changeImages() {
if (document.images && (preloadFlag == true)) {
for (var i=0; i<changeImages.arguments.length; i+=2) {
document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
}
}
}

var preloadFlag = false;
function preloadImages() {
if (document.images) {
learn_over = newImage("images/learn_over.gif");
ikonetic_over = newImage("images/ikonetic_over.gif");
interactiv_over = newImage("images/interactiv_over.gif");
moreinfo_over = newImage("images/moreinfo_over.gif");
updates_over = newImage("images/updates_over.gif");
grid_about = newImage("images/grid_about.gif");
grid_method = newImage("images/grid_method.gif");
grid_interactiv = newImage("images/grid_interactiv.gif");
grid_contact = newImage("images/grid_contact.gif");
grid_login = newImage("images/grid_login.gif");
corner_arrow_over = newImage("images/corner_arrow_over.gif");
corner_arrow_ccw = newImage("images/corner_arrow_ccw.gif");
arrow = newImage("images/arrow.gif");
preloadFlag = true;
}
}