function showImageViewer(imgsrc)
{
	var image = document.getElementById('fullsizeimage');
	var viewer = document.getElementById('imageviewer');
	var movie = document.getElementById('movie');
	var scrollTop = window.pageYOffset || document.documentElement.scrollTop || 0;
	var scrollLeft = window.pageXOffset || document.documentElement.scrollLeft || 0;

	if (image) {
		image.src = imgsrc;
	}
	if (viewer) {
		viewer.style.display = 'block';
		viewer.style.top = (30 + scrollTop) + 'px';
	}
	if (movie) {
		movie.style.display = 'none';
	}

	pageTracker._trackPageview(imgsrc);
}


function hideImageViewer()
{
	var viewer = document.getElementById('imageviewer');
	var movie = document.getElementById('movie');

	if (viewer) {
		viewer.style.display = 'none';
	}
	if (movie) {
		movie.style.display = 'block';
	}
}

function iphoneRollover(id, imgName)
{
	var image = document.getElementById(id);
	image.src = '/images/iphone_apps/' + id + '_portrait_' + imgName + '.jpg';
}

function showExplanation()
{
	var explanation = document.getElementById('explanation');
	if (explanation) {
		explanation.style.display = 'block';
	}
}
function hideExplanation()
{
	var explanation = document.getElementById('explanation');
	if (explanation) {
		explanation.style.display = 'none';
	}
}