document.onkeydown = NavigateThrough;

var curr = 0;

function NavigateThrough (event)
{
	if (!document.getElementById) return;

	if (window.event) event = window.event;

	if (event.ctrlKey)
	{
		var link = null;
		var href = null;
		switch (event.keyCode ? event.keyCode : event.which ? event.which : null)
		{
			case 0x27:
				link = document.getElementById ('NextLink');
				break;
			case 0x25:
				link = document.getElementById ('PrevLink');
				break;
		}

		if (link && link.href) document.location = link.href;
		if (href) document.location = href;
	}			
}

function gallery(img, src, prev, next)
{
	curr = img;
	document.getElementById('gallery').style.display = '';
	document.getElementById('gal_img').src = src;
	document.getElementById('prev_img').src = prev;
	document.getElementById('next_img').src = next;
}