hideNav = function() {
	
	if (document.getElementById) {
	
		document.getElementById("services_sub").style.display = "none";
		document.getElementById("about_sub").style.display = "none";

		
	}
	
}

showSub = function(element){
	
	if (document.getElementById) {
	
		document.getElementById(element).style.display = "block";
		
		
	}
	
}