// JavaScript Document



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) {

		about_btn_over = newImage("images/about-btn-off.gif");

		products_btn_over = newImage("images/products-btn-off.jpg");

		education_over = newImage("images/education-btn-off.jpg");

		request_btn_over = newImage("images/request-btn-off.jpg");

		members_btn_over = newImage("images/members-btn-off.jpg");

		contact_btn_over = newImage("images/contact-btn-off.png");

		preloadFlag = true;

	}

}