function doNothing() {
  return
}

var bioVisible = false;

function showHideBio(bioObj, bioShort, bioFull) {
    var overlay = document.getElementById('transparentOverlay');
    var currBio = document.getElementById(bioObj);
    var currBioShort = document.getElementById(bioShort);
    var currBioFull = document.getElementById(bioFull);
    var boxoverShim = document.getElementById("boxoverShim");

    // Set correct background for overlay 
    setBackground(overlay, boxoverShim);

    bioVisible = ! bioVisible;

    overlay.style.visibility    = bioVisible ? 'visible'            : 'hidden';
    overlay.style.display       = bioVisible ? 'block'              : 'none';
    currBio.className           = bioVisible ? 'bioLargeContainer'  : 'bioSmallContainer';
    currBioShort.style.display  = bioVisible ? 'none'               : 'block';
    currBioFull.style.display   = bioVisible ? 'block'              : 'none';

    // Set Full Bio Location    
    var arrayPageSize       = getPageSize();
    var arrayPageScroll     = getPageScroll();  
    overlay.style.height    = arrayPageSize[1];    
    currBio.style.left      = ((arrayPageSize[2] - currBio.offsetWidth) / 2);
    currBio.style.top       = (arrayPageScroll[1] + 50);
}

 //---------------------------------------------------------------
// Opacity Displayer, Version 1.0
// Copyright Michael Lovitt, 6/2002.
// Distribute freely, but please leave this notice intact.
//---------------------------------------------------------------

// if IE5.5+ on win32, then display PNGs with AlphaImageLoader
if ((browser.isIE55 || browser.isIE6up) && browser.isWin32) {
	var pngAlpha = true;
	var strExt = ".png";
// else, if the browser can display PNGs normally, then do that. that list includes:
	//     -Gecko Engine: Netscape 6 or Mozilla, Mac or PC
	//     -IE5+ Mac (OpacityObject applies the background image at 100% opacity)
	//     -Opera 6+ PC
	//     -Opera 5+ Mac (Doesn't support dynamically-set background images)
	//     -Opera 6+ Linux 
	//     -Omniweb 3.1+ 
	//     -Icab 1.9+ 
	//     -WebTV 
	//     -Sega Dreamcast
} else if ((browser.isGecko) || (browser.isIE5up && browser.isMac) || (browser.isOpera && browser.isWin && browser.versionMajor >= 6) || (browser.isOpera && browser.isUnix && browser.versionMajor >= 6) || (browser.isOpera && browser.isMac && browser.versionMajor >= 5) || (browser.isOmniweb && browser.versionMinor >= 3.1) || (browser.isIcab && browser.versionMinor >= 1.9) || (browser.isWebtv) || (browser.isDreamcast)) {
	var pngNormal = true;
	var strExt = ".png";
	// otherwise, we use plain old GIFs
} else {
	var strExt = ".gif";
}

var ns = (document.all)?false:true;
var browserVersion = parseFloat(navigator.appVersion );
//---------------------------------------------------------------


// Uses AlphaImageLoader filter, or the css background property,
// as appropriate, to apply a PNG or GIF as the background of the layerObject.
function setBackground(overlay, boxoverShim)
{
    if (pngAlpha) {
        boxoverShim.style.display = "block";
        boxoverShim.style.filter='progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)';	
        overlay.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale src='/design/images/overlay_bgndtitle.png')";
    } else if (pngNormal) {
        overlay.style.backgroundImage = 'url(/design/images/overlay_bgndtitle.png)';
    } else {
        overlay.style.backgroundImage = 'url(/design/images/overlay_bgndtitle.gif)';
    }
}
//---------------------------------------------------------------
 
 //
// getPageScroll()
// Returns array with x,y page scroll values.
// Core code from - quirksmode.org
//
function getPageScroll(){

	var yScroll, arrayPageScroll;

	if (self.pageYOffset) {
		yScroll = self.pageYOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
		yScroll = document.documentElement.scrollTop;
	} else if (document.body) {// all other Explorers
		yScroll = document.body.scrollTop;
	}
	arrayPageScroll = new Array('',yScroll) 
	return arrayPageScroll;
}


//
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.org
// Edit for Firefox by pHaez
//
function getPageSize(){
	
	var xScroll, yScroll, pageHeight, pageWidth, arrayPageSize;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}
	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
  return arrayPageSize;
}