//menu hover
function mouseOver(menu){
    botao = document.getElementById(menu);
    botao.src="images/"+menu+"_on.jpg";
}
function mouseOut(menu){
    botao = document.getElementById(menu);
    botao.src="images/"+menu+".jpg";
}

function mouseOver2(menu){
    botao = document.getElementById(menu);
    botao.src="images/"+menu+"_on.jpg";
}
function mouseOut2(menu){
    botao = document.getElementById(menu);
    botao.src="images/"+menu+".jpg";
}