function preload(){
onImages=new Array();
downImages=new Array();
for(i=0; i<=8; i++){
	onImages[i]=new Image();
	onImages[i].src="images/nav/nav"+i+"-on.jpg";
	downImages[i]=new Image();
	downImages[i].src="images/nav/nav"+i+"-down.jpg";
}
}

onImages=new Array();
downImages=new Array();
for(i=0; i<=8; i++){
	onImages[i]=new Image();
	onImages[i].src="images/nav/nav"+i+"-on.jpg";
	downImages[i]=new Image();
	downImages[i].src="images/nav/nav"+i+"-down.jpg";
}