function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImagesArray(array) {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<array.length; i+=2) {
			document[array[i]].src = array[i+1];
		}
	}
}

function ChangeImage (ImageName,FileName) {
        document[ImageName].src = FileName;
}

var selected = '';
var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		home_over = newImage("http://www.artbarsc.com/abnav/home-over.jpg");
		calendar_over = newImage("http://www.artbarsc.com/abnav/calendar-over.jpg");
		music_over = newImage("http://www.artbarsc.com/abnav/music-over.jpg");
		news_over = newImage("http://www.artbarsc.com/abnav/news-over.jpg");
		gallery_over = newImage("http://www.artbarsc.com/abnav/gallery-over.jpg");
		forum_over = newImage("http://www.artbarsc.com/abnav/forum-over.jpg");
		preloadFlag = true;
	}
}