EN = {};

EN.toggleContent = function(hrefId)
{
	var hrefCollection =  document.getElementById('ensecnav').getElementsByTagName('A');
	for(var hc=0;hc<hrefCollection.length;hc++) {
		hrefCollection[hc].className = "ensub-off";
	}
	
	var contentCollection =  document.getElementById('ensubcontent').getElementsByTagName('DIV');
	for(var cc=0;cc<contentCollection.length;cc++) {
		contentCollection[cc].style.display = "none";
	}
	
	if(document.getElementById(hrefId)) {
		document.getElementById(hrefId).className = "ensub-on";
	}
	if(document.getElementById('ensubcontent-' + hrefId)) {
		document.getElementById('ensubcontent-' + hrefId).style.display = "block";
	}

};

EN.preload = function(domId,url)
{
	window[domId] = new Image();
	window[domId].src = url;
};


EN.over = function(domId)
{
	if(window[domId + "_on"]) {
		document.getElementById(domId).src = window[domId + "_on"].src;
	}
};
		
EN.out = function(domId)
{
	if(window[domId]) {
		document.getElementById(domId).src = window[domId].src;
	}
};


EN.preload('nav_services_on','/assets/images/nav_services_on.gif');
EN.preload('nav_method_on','/assets/images/nav_method_on.gif');
EN.preload('nav_clients_on','/assets/images/nav_clients_on.gif');
EN.preload('nav_about_on','/assets/images/nav_about_on.gif');
EN.preload('nav_services','/assets/images/nav_services.gif');
EN.preload('nav_method','/assets/images/nav_method.gif');
EN.preload('nav_clients','/assets/images/nav_clients.gif');
EN.preload('nav_about','/assets/images/nav_about.gif');


EN.preload('home_services_on','/assets/images/home_services_on.gif');
EN.preload('home_method_on','/assets/images/home_method_on.gif');
EN.preload('home_clients_on','/assets/images/home_clients_on.gif');
EN.preload('home_about_on','/assets/images/home_about_on.gif');
EN.preload('home_services','/assets/images/home_services.gif');
EN.preload('home_method','/assets/images/home_method.gif');
EN.preload('home_clients','/assets/images/home_clients.gif');
EN.preload('home_about','/assets/images/home_about.gif');