// Preload images
var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		over_nav1_04_base = newImage(/*URL*/'/images/nav/nav1_04_over.gif');
		over_nav1_05_base = newImage(/*URL*/'/images/nav/nav1_05_over.gif');
		over_nav1_06_base = newImage(/*URL*/'/images/nav/nav1_06_over.gif');
		over_nav1_07_base = newImage(/*URL*/'/images/nav/nav1_07_over.gif');
		over_nav1_08_base = newImage(/*URL*/'/images/nav/nav1_08_over.gif');
		over_nav2_02_base = newImage(/*URL*/'/images/nav/nav2_02_over.gif');
		over_nav2_03_base = newImage(/*URL*/'/images/nav/nav2_03_over.gif');
		over_nav2_04_base = newImage(/*URL*/'/images/nav/nav2_04_over.gif');
		over_nav2_05_base = newImage(/*URL*/'/images/nav/nav2_05_over.gif');
		over_nav2_06_base = newImage(/*URL*/'/images/nav/nav2_06_over.gif');
		over_nav2a_10_base = newImage(/*URL*/'/images/nav/nav2a_10_over.gif');
		over_nav2a_16_base = newImage(/*URL*/'/images/nav/nav2a_16_over.gif');
		preloadFlag = true;
	}
}

// Random Image generator
var dir = 'images/random/';
var filetype = 'jpg';

function randImage() {
  var randnum = Math.random();
  var rand = Math.round((numberOfImages - 1) * randnum) + 1;
  roll('imageMain',dir + rand + 'a.' + filetype);
  roll('imageTop' ,dir + rand + 'b.' + filetype);
}

// EDGE Rollover Script
var last_image;
var last_name;
var nav_stay = new Array();

function roll(img_name, roll_to) {
  if (document.images) {
	for (var i=0; i<nav_stay.length; i++) {
		if (img_name == nav_stay[i]) {
			return;
		}
	}
	var obj = eval('document.' + img_name);
	last_image = obj.src;
	last_name = img_name;
	obj.src = roll_to;
  }
}
// End Rollover Script

// Always use with roll()
// Use: roll_restore();
function roll_restore() {
	if (last_image) {
		var flip_back = eval('document.' + last_name);
		flip_back.src = last_image;
	}
}