Element.prototype.remove=function(){this.parentElement.removeChild(this)},NodeList.prototype.remove=HTMLCollection.prototype.remove=function(){for(var e=this.length-1;0<=e;e--)this[e]&&this[e].parentElement&&this[e].parentElement.removeChild(this[e])};

var expandMenu=function(){
    var navyBar=document.getElementById('navbar-collapse-1');
    if(navyBar.style.display=="block"){
        navyBar.style.display="none"
    }else{
        navyBar.style.display="block"
    }
}