{
	know0=new Image();
	know0.src="../images/nav-know-off.jpg";
	know1=new Image();
	know1.src="../images/nav-know-on.jpg";  
	
	eat0=new Image();
	eat0.src="../images/nav-eat-off.jpg";
	eat1=new Image();
	eat1.src="../images/nav-eat-on.jpg";
	
	learn0=new Image();
	learn0.src="../images/nav-learn-off.jpg";
	learn1=new Image();
	learn1.src="../images/nav-learn-on.jpg";
	
	live0=new Image();
	live0.src="../images/nav-live-off.jpg";
	live1=new Image();
	live1.src="../images/nav-live-on.jpg";
	
	pro0=new Image();
	pro0.src="../images/nav-pro-off.jpg";
	pro1=new Image();
	pro1.src="../images/nav-pro-on.jpg";
	
	edu0=new Image();
	edu0.src="../images/nav-edu-off.jpg";
	edu1=new Image();
	edu1.src="../images/nav-edu-on.jpg";
	
	about0=new Image();
	about0.src="../images/nav-about-off.jpg";
	about1=new Image();
	about1.src="../images/nav-about-on.jpg";
}

// main nav functions

function navOn(imgName) {
	if (document.images) {
		document.images[imgName].src = eval(imgName + '1.src');
	}
}

function navOff(imgName) {
	if (document.images) {
		document.images[imgName].src = eval(imgName + '0.src');
	}
}


{
	nag0=new Image();
	nag0.src="../images/nag-off.gif";
	nag1=new Image();
	nag1.src="../images/nag-on.gif"; 
	
	labels0=new Image();
	labels0.src="../images/labels-off.gif";
	labels1=new Image();
	labels1.src="../images/labels-on.gif";
	
	gdaintro0=new Image();
	gdaintro0.src="../images/gdaintro-off.gif";
	gdaintro1=new Image();
	gdaintro1.src="../images/gdaintro-on.gif";
	
	using0=new Image();
	using0.src="../images/using-off.gif";
	using1=new Image();
	using1.src="../images/using-on.gif";
	
	rnag0=new Image();
	rnag0.src="../images/rnag-off.gif";
	rnag1=new Image();
	rnag1.src="../images/rnag-on.gif";
	
	building0=new Image();
	building0.src="../images/building-off.gif";
	building1=new Image();
	building1.src="../images/building-on.gif";
	
	kgdas0=new Image();
	kgdas0.src="../images/kgdas-off.gif";
	kgdas1=new Image();
	kgdas1.src="../images/kgdas-on.gif";
	
	parts0=new Image();
	parts0.src="../images/parts-off.gif";
	parts1=new Image();
	parts1.src="../images/parts-on.gif";
	
	claims0=new Image();
	claims0.src="../images/claims-off.gif";
	claims1=new Image();
	claims1.src="../images/claims-on.gif";
}

// left nav functions

function lnavOn(imgName) {
	if (document.images) {
		document.images[imgName].src = eval(imgName + '1.src');
	}
}

function lnavOff(imgName) {
	if (document.images) {
		document.images[imgName].src = eval(imgName + '0.src');
	}
}


// gda tool popup function

function gdaPopup() {
	window.open('../gda-tool/GDA3.html','GDA','width=970,height=790,resizable=yes,toolbar=no,scrollbars=yes');
}

// commercial video popup function

function videoPopup() {
	window.open('../video/flvPlayer.html','Video','width=610,height=510,resizable=yes,toolbar=no,scrollbars=no');
}