function TopMenuButonAc(Nav,Boyut)
{
document.getElementById("Nav"+Nav).style.visibility='visible';
document.getElementById("Btn"+Nav).className='MainButonOn'+Boyut;
document.getElementById("UstMenuIframe").style.visibility='visible';
}

function TopMenuButonKapat(Nav)
{
document.getElementById("Nav"+Nav).style.visibility='hidden';
document.getElementById("Btn"+Nav).className='MainButon';
document.getElementById("UstMenuIframe").style.visibility='hidden';
}