function zoomin()  {
document.getElementById("content").style.fontSize = 1.0 + "em";
document.getElementById("mainNav").style.fontSize = 1.2 + "em";
document.getElementById("footer").style.fontSize = 1.0 + "em";
}
function zoomout()  {
document.getElementById("content").style.fontSize = 0.7 + "em";
document.getElementById("content").style.fontSize = 0.7 + "em";
document.getElementById("mainNav").style.fontSize = 0.9 + "em";
document.getElementById("footer").style.fontSize = 0.7 + "em";
}
function normal()  {
document.getElementById("content").style.fontSize = 0.85 + "em";
document.getElementById("mainNav").style.fontSize = 1.0 + "em";
document.getElementById("footer").style.fontSize = 0.85 + "em";
}
function block()  {
document.getElementById("content").style.textAlign = 'justify';
}
function left()  {
document.getElementById("content").style.textAlign = 'left';
}