function moji(n)
{
if(n == 1)
{
document.getElementById('main_container').style.fontSize = '100%';
document.getElementById('main_container').style.lineHeight = '150%';
}
if(n == 2)
{
document.getElementById('main_container').style.fontSize = '125%';
document.getElementById('main_container').style.lineHeight = '150%';
}
if(n == 3)
{
document.getElementById('main_container').style.fontSize = '150%';
document.getElementById('main_container').style.lineHeight = '150%';
}
}