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) {

		m1_over = newImage("img/m1_over.gif");
		m2_over = newImage("img/m2_over.gif");
		m3_over = newImage("img/m3_over.gif");
		m4_over = newImage("img/m4_over.gif");
		m5_over = newImage("img/m5_over.gif");
		
		lv_over = newImage("../img/lv_over.jpg");
		ru_over = newImage("../img/ru_over.jpg");
		en_over = newImage("../img/en_over.jpg");
		de_over = newImage("../img/de_over.jpg");

		preloadFlag = true;
	}
}