function setActive(mId)
{
    var d = document;
    header = d.getElementById("navheader");
	elements = header.getElementsByTagName("li");
	
	for (i = 0; i < elements.length; i++)
	{
	    elements[i].className = "";
	    
	    if (elements[i].Id == mId)
	        elements[i].className = "active";
    }
}
function show(id)
{
    document.getElementById(id).style.visibility = "visible";
}
function hide(id)
{
    document.getElementById(id).style.visibility = "hidden";
}