function changeopacity(div,onoroff) {
	if (onoroff == 1) {
		document.getElementById(div).style.opacity = 0.75;
		document.getElementById(div).style.filter = "alpha(opacity=75)";
	}
	else {
		document.getElementById(div).style.opacity = 1;
		document.getElementById(div).style.filter = "alpha(opacity=100)";
	}
}