function init_vn() {
	if (document.getElementById) document.onkeydown = ctrlgo;
	externalLinks();
}

function ctrlgo(e) {
	if (!e) var e = window.event;
	var code = e.keyCode||e.which;
	if ((code == 37) && (e.ctrlKey == true)) {
		var u = document.getElementById('prevp');
		if (u) location.href = u.href;
	}
	if ((code == 39) && (e.ctrlKey == true)) {
		var u = document.getElementById('nextp');
		if (u) location.href = u.href;
	}
}
window.onload = init_vn;