function addEvent(elm, evType, fn, useCapture) {
    
	if (elm.addEventListener) {
		elm.addEventListener(evType, fn, useCapture);
		return true;
	}
	else if (elm.attachEvent) {
		var r = elm.attachEvent('on' + evType, fn);
		return r;
	}
	else {
		elm['on' + evType] = fn;
	}
}

function menu_init(menu)
{
    var li = $(menu);
    var divs = li.getElementsByTagName("div");
    
    for(var it=0,len=divs.length; it < len; it++)
    {
        var div = divs[it];
        addEvent(li, 'click', function(){ if(div.style.display=="none") new Effect.BlindDown(div,{duration: 1});}, true);
        div.style.display = "none";
    }
}