function on(n) {
		document.getElementById('m'+n).style.backgroundImage = "url(./img/menu-ac.gif)";
  		document.getElementById('m'+n).style.backgroundPosition = "top";
		document.getElementById('m'+n).style.backgroundRepeat = "repeat-x";

}
function off(n) {
		document.getElementById('m'+n).style.backgroundImage = "url(./img/menu-noac.gif)";
  		document.getElementById('m'+n).style.backgroundPosition = "top";
		document.getElementById('m'+n).style.backgroundRepeat = "repeat-x";

}
function LeftOn(n) {
		document.getElementById('L'+n).style.backgroundImage = "url(./img/left-ac.gif)";
  		document.getElementById('L'+n).style.backgroundPosition = "top";
		document.getElementById('L'+n).style.backgroundRepeat = "repeat-x";

}
function LeftOff(n) {
		document.getElementById('L'+n).style.backgroundImage = "url(./img/left-noac.gif)";
  		document.getElementById('L'+n).style.backgroundPosition = "top";
		document.getElementById('L'+n).style.backgroundRepeat = "repeat-x";

}