menu_home_off = new Image();
menu_home_off.src = "images/menu-home-off.gif";
menu_home_on = new Image();
menu_home_on.src = "images/menu-home-on.gif";

menu_about_off = new Image();
menu_about_off.src = "images/menu-about-off.gif";
menu_about_on = new Image();
menu_about_on.src = "images/menu-about-on.gif";

menu_press_off = new Image();
menu_press_off.src = "images/menu-press-off.gif";
menu_press_on = new Image();
menu_press_on.src = "images/menu-press-on.gif";

menu_invest_off = new Image();
menu_invest_off.src = "images/menu-invest-off.gif";
menu_invest_on = new Image();
menu_invest_on.src = "images/menu-invest-on.gif";

menu_contact_off = new Image();
menu_contact_off.src = "images/menu-contact-off.gif";
menu_contact_on = new Image();
menu_contact_on.src = "images/menu-contact-on.gif";

function select(imgName) {
	imgOn = eval(imgName + "_on.src");
	document[imgName].src = imgOn;
}

function unselect(imgName) {
	imgOff = eval(imgName + "_off.src");
	document[imgName].src = imgOff;
}