var loaded = false;
if (document.images) {
    img1off = new Image();img1off.src = "images/btn_home_off.gif";
    img2off = new Image();img2off.src = "images/btn_about_off.gif";
    img3off = new Image();img3off.src = "images/btn_current_off.gif";
	img4off = new Image();img4off.src = "images/btn_pexperience_off.gif";
	img5off = new Image();img5off.src = "images/btn_services_off.gif";
	img6off = new Image();img6off.src = "images/btn_careers_off.gif";
	img7off = new Image();img7off.src = "images/btn_news_off.gif";

}
function imageLoad() {
    if (document.images) {
    img1on = new Image();img1on.src = "images/btn_home_on.gif";
    img2on = new Image();img2on.src = "images/btn_about_on.gif";
    img3on = new Image();img3on.src = "images/btn_current_on.gif";
	img4on = new Image();img4on.src = "images/btn_pexperience_on.gif";
	img5on = new Image();img5on.src = "images/btn_services_on.gif";
	img6on = new Image();img6on.src = "images/btn_careers_on.gif";
	img7on = new Image();img7on.src = "images/btn_news_on.gif";

        return (loaded = true);
    }
}
function rollOut(imgName) {
    if (document.images) {
        document[imgName].src = eval(imgName+"off.src");
    }
}
function rollIn(imgName) {
    if (document.images && (loaded == true)) {
        document[imgName].src = eval(imgName+"on.src");
    }
}