// to show and hide thumbnails.

function HideContent(d) 
{
	if (d.length < 1) 
		{ return; }
	document.getElementById(d).style.display = "none";
}

function ShowContent(d) {
	if (d.length < 1) 
		{ return; }
	document.getElementById(d).style.display = "";
}

function ReverseContentDisplay(d) 
{
	if (d.length < 1) 
		{ return; }
	if (document.getElementById(d).style.display == "none") 
		{ document.getElementById(d).style.display = ""; }
	else 
		{ document.getElementById(d).style.display = "none"; }
}


/********************** GET MOUSE XY ********************/

// Detect if the browser is IE or not.
// If it is not IE, we assume that the browser is NS.
var IE = document.all?true:false

// If NS -- that is, !IE -- then set up for mouse capture
if (!IE) document.captureEvents(Event.MOUSEMOVE)

// Set-up to use getMouseXY function onMouseMove
document.onmousemove = getMouseXY;

// Temporary variables to hold mouse x-y pos.s
var tempX = 0
var tempY = 0

// Main function to retrieve mouse x-y pos.s

function getMouseXY(e) 
{
  if (IE) { // grab the x-y pos.s if browser is IE
    tempX = event.clientX + document.body.scrollLeft
    tempY = event.clientY + document.body.scrollTop
  } else {  // grab the x-y pos.s if browser is NS
    tempX = e.pageX
    tempY = e.pageY
  }  
  // catch possible negative values in NS4
  if (tempX < 0){tempX = 0}
  if (tempY < 0){tempY = 0}
}

/********************** END OF GET MOUSE XY ********************/

function showAbout()
{
	ReverseContentDisplay('about'); 
	HideContent('contact'); 
}
function showContact()
{
	HideContent('about'); 
	ReverseContentDisplay('contact'); 
}