var initPage = function() {
	initMenu();
	initModelBox();
}

var initMenu = function()
{
	var nav = document.getElementById('menu4');
	if (nav) {
		var lis = nav.getElementsByTagName('li');
		for (var i = 0; i < lis.length; i++){
			lis[i].onmouseover = function() {
				this.className = 'hover';
			};
			lis[i].onmouseout = function() {
				this.className = '';
			};
		}
	}
}

var initModelBox = function()
{
	var moreButton = document.getElementById('more-button');
	var closeButton = document.getElementById('close-button');
	var dropDownContainer = document.getElementById('dropdown-carrier');
	moreButton.onclick = function() {
		dropDownContainer.style.display = 'block';
		moreButton.style.display = 'none';
	}
	closeButton.onclick = function() {
		dropDownContainer.style.display = 'none';
		moreButton.style.display = 'block';
	}	
}

if (window.addEventListener){
	window.addEventListener("load", initPage, false);
} else if (window.attachEvent){
	window.attachEvent("onload", initPage);
}