function NBActive(char_index)
{
	var el = document.getElementById("m" + char_index);
	if(el) {
		el.style.color = "#666666";
		el.parentNode.className += " current";
	}
	return true;
}

function hide_object(obj_name)
{
	var b = document.getElementById(obj_name).style;
	if(b) b.display = "none";
}

function change_opacity(opacity, id)
{
	var object = document.getElementById(id).style;
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
}

function random(num)
{
	var current_date = new Date();
	var ran = 60 / num;
	random_number = current_date.getSeconds();
	random_number = Math.floor(random_number / ran);
	return random_number;
}