userAgent = window.navigator.userAgent;
browserVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function findElement(n,ly) {
	if (browserVers < 4)		return document[n];
	var curDoc = ly ? ly.document : document;
	var elem = curDoc[n];
	if (!elem) {
		for (var i=0;i<curDoc.layers.length;i++) {
			elem = findElement(n,curDoc.layers[i]);
			if (elem) return elem;
		}
	}
	return elem;
}

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

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		info_1_over = newImage("../images/vision/bizmap/info-1_over.jpg");
		info_2_over = newImage("../images/vision/bizmap/info-2_over.jpg");
		info_3_over = newImage("../images/vision/bizmap/info-3_over.jpg");
		info_4_over = newImage("../images/vision/bizmap/info-4_over.jpg");
		info_5_over = newImage("../images/vision/bizmap/info-5_over.jpg");
		info_6_over = newImage("../images/vision/bizmap/info-6_over.jpg");
		info_7_over = newImage("../images/vision/bizmap/info-7_over.jpg");
		info_8_over = newImage("../images/vision/bizmap/info-8_over.jpg");
		info_9_over = newImage("../images/vision/bizmap/info-9_over.jpg");
		info_10_over = newImage("../images/vision/bizmap/info-10_over.jpg");
		info_11_over = newImage("../images/vision/bizmap/info-11_over.jpg");
		info_12_over = newImage("../images/vision/bizmap/info-12_over.jpg");
		info_13_over = newImage("../images/vision/bizmap/info-13_over.jpg");
		info_15_over = newImage("../images/vision/bizmap/info-15_over.jpg");
		info_16_over = newImage("../images/vision/bizmap/info-16_over.jpg");
		info_17_over = newImage("../images/vision/bizmap/info-17_over.jpg");
		info_18_over = newImage("../images/vision/bizmap/info-18_over.jpg");
		info_19_over = newImage("../images/vision/bizmap/info-19_over.jpg");
		preloadFlag = true;
	}
}