// DROP DOWN MENU FOR IE6

dropdown = function() {
	var menu_items = document.getElementById("main_nav").getElementsByTagName("li");
	
	for (var i=0; i<menu_items.length; i++) {
		menu_items[i].onmouseover = function() {
			this.className += " drop_down";
		}
		
		menu_items[i].onmouseout = function() {
			this.className = this.className.replace(new RegExp("drop_down\\b"), "");
		}
	}
}

if (window.attachEvent) {
	window.attachEvent("onload", dropdown);
}