Error: hideMenu(); not defined

<script src="jquery-1.11.0.min.js"></script>
<script src="jquery-migrate-1.2.1.min.js"></script>
<style>
body{
	background: black;
}

div.close{
	bottom: 10%;
	left: 0;
	position: absolute;
	width: 100%;
}

#menu ul{
	list-style-type: none;
}

.search{
	border: 2px solid;
	border-color: black;
	border-radius: 25px;
	padding-left: 10;
	padding-top: 5%;
	width: 76%;
	height: 5%;
	overflow: hidden;
}

#menu ul li{
	background: -webkit-linear-gradient(white, grey);
	background: -o-linear-gradient(white, grey);
	background: -moz-linear-gradient(white, grey);
	background: linear-gradient(white, grey);
	border: 2px solid;
	border-color: black;
	border-radius: 25px;
	padding-left: 10;
	padding-top: 5%;
	width: 70%;
	height: 5%;
	overflow: hidden;
}

#menu{
	background: black;
	width: 15%;
	height: 100%;
	overflow: hidden;
	top: 0;
	left: 0;
	position: absolute;
}

#main{
	top: 0;
	left: 5%;
	position: absolute;
	width: 90%;
	height: 100%;
	overflow: hidden;
	background: white;
}

#menu-icon{
	top: 0;
	left: 0;
	position: absolute;
</style>
<input type="hidden" value="false" id="menu1">
<input type="hidden" value="false" id="menu2">
<title id="title">Out and Up</title>
<script>
window.addEventListener('load', onLoad);
$.ajaxSetup ({cache: false});
function checkMenus(){
	var menu1 = $("#menu1").val();
	var menu2 = $("#menu2").val();
	if(menu1 == "false" && menu2 == "false"){

	}else{

	}
}

function updateTitle(){
	var place = 0;
	alert("Hi their");
	if(place == 0){
		$("#title").val() = "Out and Up!";
		place = 1;
	else{
		$("#title").val() = "";
		place = 0;
	}
}

function load(place){
	$("#main").hide(500);
	if(place == "home"){
		$("#main").load("pages/home.html");
	}else if(place == "home"){
		$("#main").load("pages/home.html");
	}
	$("#main").hide(0);
	$("#main").show(500);
	hidemenu();
}

function showMenu(){
	$("#menu").show(500);
	$("#menu-icon").hide(500);
}

function hidemenu(){
	$("#menu").hide(500);
	$("#menu-icon").show(500);
}

function onload(){
	$("#menu").hide();
	$("#main").load("pages/index.html");
	setInterval(checkMenus, 1000);
	setInterval(updateTitle, 1000);
}
function search(){
	alert("searching!");
}
</script>
<div id="main">
Sorry... Your browser may not be jQuery compatible
</div>
<div id="menu" onmouseout="menu1 = false;">
<ul>
<input type="text" id="input" placeholder="Search" style="width: 75%; height: 100%;" class="search"><input type="submit" class="search" id="search" style="width: 10%; height: 100%;" onclick="search();" value=">"><br>
<li onclick="load('home');">Home</li>
<li onclick="hidemenu();">Something</li>
</ul>
<div class="close">
<ul>
<li onclick="hidemenu();">Close menu!</li>
</ul>
</div>
</div>
<div id="menu-icon">
<img src="images/menu.png" onclick="showMenu();">
</div>
<div id="time"></div>