//try to eliminate IE 6 flicker
try {
  document.execCommand("BackgroundImageCache", false, true);
} catch(err) {}

//cache menu bar images
var icons = [
	'topnav',
	];

var iconsLen = icons.length;
var imgs = [];

for(var i=0; i < iconsLen; i++)
{
	imgs[i] = new Image;
	imgs[i].src = 'images/' + icons[i] + '.gif';
}