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) {
		home_over = newImage("images/submenu_e-01_on.gif");
		aboutus_over = newImage("images/submenu_e-02_on.gif");
		products_over = newImage("images/submenu_e-03_on.gif");
		exhibitions_over = newImage("images/submenu_e-04_on.gif");
		dealers_over = newImage("images/submenu_e-05_on.gif");
		contact_over = newImage("images/submenu_e-06_on.gif");
		news_over = newImage("images/submenu_e-07_on.gif");
		preloadFlag = true;
	}
}