function init() {
	var oNav = document.getElementById('nav').getElementsByTagName('img')[0];
	window.sNormalSrc = new Image();
	window.sNormalSrc.src = 'images/bnr_about_speak.gif';
	window.sOverSrc = new Image();
	window.sOverSrc.src = (document.getElementById('splash')) ? 'images/bnr_client_login.gif' : 'images/bnr_listen.gif';
	
	oNav.onclick = function() {
		var oAbout = document.getElementById('about');
		var oPlayer = document.getElementById('player');
		var oSplash = document.getElementById('splash');
		var oForm = document.getElementById('frmLogin');
		var sOverSrc = (oSplash) ? 'images/bnr_client_login.gif' : 'images/bnr_listen.gif';
		var oLogo = document.getElementById('logo_alt');
		
		if( oAbout.style.display == 'block') {
			oAbout.style.display = 'none';
			if(oPlayer) oPlayer.style.display = 'block';
			if(oSplash) oSplash.style.display = 'block';
			if(oForm) oForm.style.display = 'block';
			if(oLogo) oLogo.style.display = 'none';
			this.src = window.sNormalSrc.src;
		} else {
			oAbout.style.display = 'block';
			if(oPlayer) oPlayer.style.display = 'none';
			if(oSplash) oSplash.style.display = 'none';
			if(oForm) oForm.style.display = 'none';
			if(oLogo) oLogo.style.display = 'block';
			this.src = window.sOverSrc.src;
		}
	}
}

function getScreenWidth() {
	if (window.document.innerWidth) w = window.document.innerWidth;
	else if(window.document.documentElement.clientWidth) w = window.document.documentElement.clientWidth;
	else if(window.document.body.clientWidth) w = window.document.body.clientWidth;
	else w = 0;
	return w;
}

var newWin = null;
function openWin(url, w, h) {
	var props = "width=" + w + ",height=" + h + ",toolbar=no,menubar=no,personalbar=no,copyhistory=no,scrollbars=yes,screenX=" + (getScreenWidth() - w);
	var handle = "oNewWin";
	if(newWin && !newWin.closed) {
		newWin.focus();
	}
	newWin = window.open(url, handle, props);
}

addEvent(window, 'load', init);