// nav rollover
function changeMN(mn, mnevent) {
	menu=document.getElementById('mn' + eval(mn) +'');
	menulink=document.getElementById('mnL' + eval(mn) +'');
	
	if (mnevent=='d') {	
	menu.className='mndn';
	menulink.className='mnLdn';
	} else {
	menu.className='mnup';
	menulink.className='mnLup';
	}
}

function HideContent(d) 
{
    if(d.length < 1) { return; }
    document.getElementById(d).style.display = "none";
}

function ShowContent(d) 
{
    if(d.length < 1) { return; }
    document.getElementById(d).style.display = "block";
}

function ReverseContentDisplay(d) 
{
    if(d.length < 1) { return; }
    if(document.getElementById(d).style.display == "none") { document.getElementById(d).style.display = "block"; }
    else { document.getElementById(d).style.display = "none"; }
}