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) {
		streifzug_navimap_1_over = newImage("images/streifzugthemen_1.gif");
		streifzug_navimap_2_over = newImage("images/streifzugthemen_2.gif");
		streifzug_navimap_3_over = newImage("images/streifzugthemen_3.gif");
		streifzug_navimap_4_over = newImage("images/streifzugthemen_4.gif");
		streifzug_navimap_5_over = newImage("images/streifzugthemen_5.gif");
		streifzug_navimap_6_over = newImage("images/streifzugthemen_6.gif");
		streifzug_navimap_7_over = newImage("images/streifzugthemen_7.gif");
		streifzug_navimap_8_over = newImage("images/streifzugthemen_8.gif");
		streifzug_navimap_9_over = newImage("images/streifzugthemen_9.gif");
		streifzug_navimap_10_over = newImage("images/streifzugthemen_10.gif");
		preloadFlag = true;
	}
}