function eventAssign(obj,event,func){
	if( obj.addEventListener ) {
		obj.addEventListener(event,func,false);
	}else if (obj.attachEvent) {
		obj['e'+event+func]=func;
		obj[event+func]=function(){
		    obj['e'+event+func]( window.event );
		}
		obj.attachEvent('on'+event,obj[event+func]);
	}else {
		alert('Este navegador no es soportado!!');
	}
}

function preparaEventosMenu() {
    document.getElementById("menuArea").innerHTML = sMenu;
    objNav = document.getElementById("nav");
    hijosLI = objNav.getElementsByTagName("LI");
    for (i = 0; i < hijosLI.length; i++) {
        if (hijosLI[i].getElementsByTagName("UL").length) {
            eventAssign(hijosLI[i], "mouseover", function() {despliega(this);});
            eventAssign(hijosLI[i], "mouseout", function() {pliega(this);});
        }
    }
}

function despliega(padre) {
    hijos = padre.getElementsByTagName("UL");
    hijos[0].style.visibility = "visible";
}

function pliega(padre) {
    hijos = padre.getElementsByTagName("UL");
    hijos[0].style.visibility = "hidden";
}

window.onload = preparaEventosMenu;
//-------------------------------------------------------------------------------------------------------------------------------------

function saveCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}else expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0; i<ca.length; i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') {
		    c = c.substring(1,c.length);
		}
		if (c.indexOf(nameEQ) == 0) {
		    return c.substring(nameEQ.length,c.length);
		}
	}
	return null;
}