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) {

		m_03_over = newImage("images/m_03-over.gif");

		m_04_over = newImage("images/m_04-over.gif");

		m_05_over = newImage("images/m_05-over.gif");

		m_06_over = newImage("images/m_06-over.gif");

		m_07_over = newImage("images/m_07-over.gif");

		m_08_over = newImage("images/m_08-over.gif");

		m_09_over = newImage("images/m_09-over.gif");

		m_10_over = newImage("images/m_10-over.gif");

		nav_03_over = newImage("nav/nav_03-over.gif");

		nav_04_over = newImage("nav/nav_04-over.gif");

		nav_05_over = newImage("nav/nav_05-over.gif");

		nav_06_over = newImage("nav/nav_06-over.gif");

		nav_07_over = newImage("nav/nav_07-over.gif");

		nav_08_over = newImage("nav/nav_08-over.gif");

		nav_09_over = newImage("nav/nav_09-over.gif");

		nav_10_over = newImage("nav/nav_10-over.gif");

//experimento//

		naven_03_over = newImage("en/naven_03-over.gif");

		naven_04_over = newImage("en/naven_04-over.gif");

		naven_05_over = newImage("en/naven_05-over.gif");

		naven_06_over = newImage("en/naven_06-over.gif");

		naven_07_over = newImage("en/naven_07-over.gif");

		naven_08_over = newImage("en/naven_08-over.gif");

		naven_09_over = newImage("en/naven_09-over.gif");

		naven_10_over = newImage("en/naven_10-over.gif");

		preloadFlag = true;

	}

}