/*
Show/hide subnav through interaction with main menu.
Used in home page and in top level pages for portfolio and profiles.
*/
var cNav = null;
var cSubNav = null;

function showSubNav(who){
	if(cNav != null) {
		cNav.style.textDecoration = "none";
		cSubNav.style.color = "#b8bc9b"
		cSubNav.style.display = "none";
	}
	if(who != null){
		cNav = who;

		// use "id" of triggering element to construct element reference for subnav
		cSubNav = document.getElementById("nav_"+ who.id);
		
		cNav.style.textDecoration = "underline";
		cSubNav.style.color = "#ffffff"
		cSubNav.style.display = "block";
	} else {
		cNav = null;	
	}
	//alert("who.id = " + who.id + " ... subNav = " + document.getElementById("nav_"+subNav).id)
}

/*
Image replacement for home page's chinese "contact" character.
*/
var chinese = new Image();
chinese.src = "res/chinese.gif"
var chineseOver = new Image();
chineseOver.src = "res/chinese-over.gif"

function showHideChinese(bool){
	var con = document.getElementById("contact");
	if(bool){
		con.style.textDecoration = "underline";
		con.style.color = "#ffffff";
		document.images['chin'].src = chineseOver.src;
	} else {
		con.style.textDecoration = "none";
		con.style.color = "#b8bc9b";
		document.images['chin'].src = chinese.src;
	}
}