navHover = function() {
	var lis = document.getElementById('nav').getElementsByTagName('LI');
	for (var i=0; i<lis.length; i++) {
		lis[i].onmouseover=function() {
			this.className+=' iehover';
		}
		lis[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(' iehover\\b'), '');
		}
	}
}
if (window.attachEvent) window.attachEvent('onload', navHover);

column_navHover = function() {
	var lis = document.getElementById('column_nav').getElementsByTagName('LI');
	for (var i=0; i<lis.length; i++) {
		lis[i].onmouseover=function() {
			this.className+=' subnavOn';
		}
		lis[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(' subnavOn\\b'), '');
		}
	}
}
if (window.attachEvent) window.attachEvent('onload', column_navHover);