if (document.images) {
    buttons_about_down = new Image(91, 42);
    buttons_about_down.src = "http://67.199.81.43/images/buttons_about_down.png";
    buttons_about_up = new Image(91, 42);
    buttons_about_up.src = "http://67.199.81.43/images/buttons_about_up.png";

    buttons_celebrate_down = new Image(91, 42);
    buttons_celebrate_down.src = "http://67.199.81.43/images/buttons_celebrate_down.png";
    buttons_celebrate_up = new Image(91, 42);
    buttons_celebrate_up.src = "http://67.199.81.43/images/buttons_celebrate_up.png";

    buttons_serve_down = new Image(91, 42);
    buttons_serve_down.src = "http://67.199.81.43/images/buttons_serve_down.png";
    buttons_serve_up = new Image(91, 42);
    buttons_serve_up.src = "http://67.199.81.43/images/buttons_serve_up.png";

    buttons_share_down = new Image(91, 42);
    buttons_share_down.src = "http://67.199.81.43/images/buttons_share_down.png";
    buttons_share_up = new Image(91, 42);
    buttons_share_up.src = "http://67.199.81.43/images/buttons_share_up.png";

    buttons_study_down = new Image(91, 42);
    buttons_study_down.src = "http://67.199.81.43/images/buttons_study_down.png";
    buttons_study_up = new Image(91, 42);
    buttons_study_up.src = "http://67.199.81.43/images/buttons_study_up.png";

}

function lightup(imgName) {
    if (document.images) {
        imgOn = eval(imgName + "_down.src");
        document[imgName].src = imgOn;
    }
}

function turnoff(imgName) {
    if (document.images) {
        imgOff = eval(imgName + "_up.src");
        document[imgName].src = imgOff;
    }
}
function MenuItem(s){
	window.location.href=s ;
    }
function SlideClick(s,t){
    if(t=='_blank'){
        window.open(s);
    }
    else{
	    window.location.href=s ;
	}
    }