function Roll_gif(id,over)
{
	if(window.document.images) 
	{
		if (over)
			window.document.images[id].src = "images/" + id + "_over.gif";
		else
			window.document.images[id].src =  "images/" + id + ".gif";
	}
}



// This script is to show/hide layers for the bio page

var ie45,ns6,ns4,dom = false;
if (navigator.appName == "Microsoft Internet Explorer") ie45 = parseInt(navigator.appVersion) >= 4;
else if (navigator.appName == "Netscape"){
	ns6 = parseInt(navigator.appVersion) >= 5;
	ns4 = parseInt(navigator.appVersion) < 5;}
dom = ie45 || ns6;

var switchHTML = new Array;
var openHTML = '';
var re = /<SCRIPT>/i;

function saveHTML(id, _HTML) {
	if(ns4) return;
	
	switchHTML[id] = _HTML;
	
}

function showHideHTML(id) {
	if(ns4) return;
	
	el = document.all ? document.all[id] : dom ? document.getElementById(id) : document.layers[id];
	
	if(openHTML.id == el.id)	{ el.innerHTML = "";  openHTML = ""; return; }
	else						{ openHTML.innerHTML = ""; }
	
	if(el.innerHTML == "" || re.test(el.innerHTML)) {
		el.innerHTML = switchHTML[id];
	} else {
		el.innerHTML = "";
	}
	
	openHTML = el;
	
}