var image1 = new Image();
var image1_on = new Image();
image1.src = "../images/nav-services.gif";
image1_on.src = "../images/nav-services-over.gif";

var image2 = new Image();
var image2_on = new Image();
image2.src = "../images/nav-photo.gif";
image2_on.src = "../images/nav-photo-over.gif";

var image3 = new Image();
var image3_on = new Image();
image3.src = "../images/nav-news.gif";
image3_on.src = "../images/nav-news-over.gif";

var image4 = new Image();
var image4_on = new Image();
image4.src = "../images/nav-articles.gif";
image4_on.src = "../images/nav-articles-over.gif";


var image5 = new Image();
var image5_on = new Image();
image5.src = "../images/nav-suppliers.gif";
image5_on.src = "../images/nav-suppliers-over.gif";


var image6 = new Image();
var image6_on = new Image();
image6.src = "../images/nav-links.gif";
image6_on.src = "../images/nav-links-over.gif";

var image7 = new Image();
var image7_on = new Image();
image7.src = "../images/banner-contractors.gif";
image7_on.src = "../images/banner-contractors-over.gif";

var image8 = new Image();
var image8_on = new Image();
image8.src = "../images/banner-already-have-constructor.gif";
image8_on.src = "../images/banner-already-have-constructor-over.gif";

var image9 = new Image();
var image9_on = new Image();
image9.src = "../images/banner-design-consultation.gif";
image9_on.src = "../images/banner-design-consultation-over.gif";

function image_on(iImage)
{
	document.images["nav_image_"+iImage].src = eval("image"+iImage+"_on").src;
}

function image_off(iImage)
{
	document.images["nav_image_"+iImage].src = eval("image"+iImage).src;
}

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) {
		nav_ko_01_over = newImage("../images/nav-ko_01-over.gif");
		nav_ko_02_over = newImage("../images/nav-ko_02-over.gif");
		nav_ko_03_over = newImage("../images/nav-ko_03-over.gif");
		nav_ko_04_over = newImage("../images/nav-ko_04-over.gif");
		nav_ko_05_over = newImage("../images/nav-ko_05-over.gif");
		nav_ko_06_over = newImage("../images/nav-ko_06-over.gif");
		nav_ko_07_over = newImage("../images/nav-ko_07-over.gif");
		preloadFlag = true;
	}
}