Вопрос решен:
e2_ctrl_navi = function(event) {
if (window.event) event = window.event
var target = (event.srcElement || event.target).tagName;
if (/textarea|input/i.test(target)) return
if (
(document.e2.mac && event.altKey) || (!document.e2.mac && event.ctrlKey)
) {
var link = event.keyCode === 37 ? document.getElementById('link-prev') || document.getElementById('link-earlier') : event.keyCode == 39 ? document.getElementById('link-next') || document.getElementById('link-later') : null;
if (link && link.href) {
location.href = link.href
if (window.event) window.event.returnValue = false
if (event.preventDefault) event.preventDefault()
}
}
}