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

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

function changeImages() {
	changeImagesArray(changeImages.arguments);
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		pre_overview = newImage('navbuttonsblue/overview.gif');
		pre_overview = newImage('navbuttonsred/overview.gif');
		pre_overview = newImage('navbuttons/overview.gif');
		pre__1 = newImage('navbuttonsblue/1.gif');
		pre__1 = newImage('navbuttonsred/1.gif');
		pre__2 = newImage('navbuttonsblue/2.gif');
		pre__2 = newImage('navbuttonsred/2.gif');
		pre__3 = newImage('navbuttonsblue/3.gif');
		pre__3 = newImage('navbuttonsred/3.gif');
		pre__4 = newImage('navbuttonsblue/4.gif');
		pre__4 = newImage('navbuttonsred/4.gif');
		pre__5 = newImage('navbuttonsblue/5.gif');
		pre__5 = newImage('navbuttonsred/5.gif');
		pre__6 = newImage('navbuttonsblue/6.gif');
		pre__6 = newImage('navbuttonsred/6.gif');
		pre__7 = newImage('navbuttonsblue/7.gif');
		pre__7 = newImage('navbuttonsred/7.gif');
		pre__8 = newImage('navbuttonsblue/8.gif');
		pre__8 = newImage('navbuttonsred/8.gif');
		pre__9 = newImage('navbuttonsblue/9.gif');
		pre__9 = newImage('navbuttonsred/9.gif');
		pre__10 = newImage('navbuttonsblue/10.gif');
		pre__10 = newImage('navbuttonsred/10.gif');
		pre__11 = newImage('navbuttonsblue/11.gif');
		pre__11 = newImage('navbuttonsred/11.gif');
		pre__12 = newImage('navbuttonsblue/12.gif');
		pre__12 = newImage('navbuttonsred/12.gif');
		pre__13 = newImage('navbuttonsblue/13.gif');
		pre__13 = newImage('navbuttonsred/13.gif');
		pre__14 = newImage('navbuttonsblue/14.gif');
		pre__14 = newImage('navbuttonsred/14.gif');
		pre__15 = newImage('navbuttonsblue/15.gif');
		pre__15 = newImage('navbuttonsred/15.gif');
		pre__16 = newImage('navbuttonsblue/16.gif');
		pre__16 = newImage('navbuttonsred/16.gif');
		pre__17 = newImage('navbuttonsblue/17.gif');
		pre__17 = newImage('navbuttonsred/17.gif');
		pre__18 = newImage('navbuttonsblue/18.gif');
		pre__18 = newImage('navbuttonsred/18.gif');
		pre__19 = newImage('navbuttonsblue/19.gif');
		pre__19 = newImage('navbuttonsred/19.gif');
		pre__20 = newImage('navbuttonsblue/20.gif');
		pre__20 = newImage('navbuttonsred/20.gif');
		pre_end = newImage('navbuttonsblue/end.gif');
		pre__1 = newImage('navbuttons/1.gif');
		preloadFlag = true;
	}
}