function isTop()
{
	if (this.location != top.location)
	{
		top.location = this.location;
	}
}
isTop();

function reloadPage()
{
	// reload IE to reload css - concerns abs positioning
	if (document.all)
		document.location.href=document.location.href;
}

function writeYear()
{
	var startYear = 2007;
	var curYear = (new Date()).getFullYear();
	document.write(startYear == curYear ? startYear : startYear + "-" + curYear);
}

function showBgndImg(imgname)
{
	var bgNode = document.getElementById('intro');
	if (bgNode.tagName == "DIV")
	{
		bgNode.style.background = 'url("' + imgname + '")';
	}
}

function swapBgndImg(imgname)
{
	var bgNode = document.getElementById('welcome');
	if (bgNode.tagName == "DIV")
	{
		bgNode.style.background = 'url("' + imgname + '")';
	}
}

var idx = 0;
function animate()
{
	var bgNode = document.getElementById('welcome');
	if (bgNode.tagName == "DIV")
	{
		bgNode.style.background = 'url("' + aImages[idx] + '")';
	}
	idx++;
	if(idx > (aImages.length-1))
	{
		idx = 0;
	}
	setTimeout(animate, 2000);
}

function showImg(imgid)
{
	var gNodes = document.getElementById('gallery').childNodes;
	for (var i = 0; gNodes.length > i; i ++)
	{
		if (gNodes[i].tagName == "SPAN") // IMG
		{
			if (gNodes[i].attributes['id'].value == 'i' +imgid)
				gNodes[i].style.display = "block";
			else
				gNodes[i].style.display = "none";
		}
	}
	var gNodes = document.getElementById('nums').childNodes;
	for (var i = 0; gNodes.length > i; i ++)
	{
		if (gNodes[i].tagName == "LI")
		{
			if (gNodes[i].attributes['id'].value == 'a' +imgid)
				gNodes[i].className = "on";
			else
				gNodes[i].className = "off";
		}
	}
	var gNodes = document.getElementById('info').childNodes;
	for (var i = 0; gNodes.length > i; i ++)
	{
		if (gNodes[i].tagName == "SPAN")
		{
			if (gNodes[i].attributes['id'].value == 'tt' +imgid)
				gNodes[i].style.display = "block";
			else
				gNodes[i].style.display = "none";
		}
	}
	/*var gNodes = document.getElementById('auth').childNodes;
	for (var i = 0; gNodes.length > i; i ++)
	{
		if (gNodes[i].tagName == "SPAN")
		{
			if (gNodes[i].attributes['id'].value == 'au' +imgid)
				gNodes[i].style.display = "block";
			else
				gNodes[i].style.display = "none";
		}
	}*/
}