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) {
			//alert(eval(changeImages.arguments[i+1]).src);
			document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1]).src;
		}
	}
}

var preloadFlag = false;

	if (document.images) {
		menu_button_1 = newImage("images/link_home.jpg");
		menu_button_2 = newImage("images/link_about.jpg");
		menu_button_3 = newImage("images/link_learnmore.jpg");
		menu_button_4 = newImage("images/link_FF.jpg");
		menu_button_5 = newImage("images/link_resellers.jpg");
        
		menu_button_1_over = newImage("images/link_home_on.jpg");
		menu_button_2_over = newImage("images/link_about_on.jpg");
		menu_button_3_over = newImage("images/link_learnmore_on.jpg");
		menu_button_4_over = newImage("images/link_FF_on.jpg");
		menu_button_5_over = newImage("images/link_resellers_on.jpg");
		
		preloadFlag = true;
	}