/**
 * Навигация по стрелкам.
 * Взято с http://www.artlebedev.ru/tools/technogrette/js/arrow-navigation/
 */

function navkey(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 0x25:
				link = document.getElementById('PrevLink');
				break;
			case 0x27:
				link = document.getElementById('NextLink');
				break;
//			case 0x24:
//				href = '/';
//				break;
		}
		if (link && link.href) {
			document.location = link.href;
		}
		if (href) {
			document.location = href;
		}
	}
}

document.onkeydown = navkey;