if (document.all) {
	var w_TopNav = document.getElementById('top_menu').firstChild;
	
	for(var i = 0; i < w_TopNav.childNodes.length; i++) {
		w_TopNav.childNodes[i].onmouseover = function() {this.lastChild.style.display = 'block';}
		w_TopNav.childNodes[i].onmouseout = function() {this.lastChild.style.display = 'none';}
	}
}