function changeImage(x)
{
	document.getElementById('galleryImage').src=x;
}

function hide(y)
{
	for (i=0; i<y; ++i)
	{
		el = "panel"+i;
  		document.getElementById(el).style.display = 'none';
	}
}

function show(x,y)
{
		hide(y);
		el = "panel"+x;
  		document.getElementById(el).style.display = 'block';
}

var subNav = new Array('subNav1');
var disappearSet = 0;

function showSubNav(id)
{
	hideSubNav();
	if(disappearSet == 1)
	{
		clearTimeout(disappear);
	}
	document.getElementById(id).style.display = "block";
}

function hideSubNav()
{		
		for (i=0; i<subNav.length; ++i)
		{
			document.getElementById(subNav[i]).style.display = 'none';
		}
}

function stay()
{
	clearTimeout(disappear);
}

function leave()
{
	disappear = setTimeout("hideSubNav()",1500);
	disappearSet = 1;
}

headerImages = new Array("header1.jpg","header2.jpg","header3.jpg","header4.jpg","header5.jpg","header6.jpg");
function randomHeader()
{
	var total = headerImages.length;
	var ranNum= (Math.floor(Math.random()*total-1))+1;
	document.getElementById('header').style.backgroundImage = "url(images/" + headerImages[ranNum] + ")";
}