document.onkeydown = function KeyScroll(event)
{
	if (window.event)
	{
		event = window.event;
	}

	if (event.ctrlKey)
	{
		switch (event.keyCode ? event.keyCode : event.which ? event.which : null)
		{
			case 0x25:
				FollowLink("prev_page_link");
				break;

			case 0x27:
				FollowLink("next_page_link");
				break;
		}
	}
}


function FollowLink(elem_id)
{
	elem = document.getElementById(elem_id);

	if (typeof(elem.href) != "undefined")
	{
		location.href = elem.href;
	}
}