function changeImage(filename) {
	document.mainimage.src = '../images/spacer.gif';
	document.mainimage.src = 'images/spacer.gif';
	document.mainimage.src = filename;
	}

function setTarget(target)
  {
    for(a = 0; a < document.links.length; a++)
    {
      if(document.links[a].name == 'lgImage')
        document.links[a].href = target;
    }
  }
/*************************************************************************
  This code is from Dynamic Web Coding at http://www.dyn-web.com/
  Copyright 2001-3 by Sharon Paine 
  See Terms of Use at http://www.dyn-web.com/bus/terms.html
  regarding conditions under which you may use this code.
  This notice must be retained in the code as is!
*************************************************************************/

// onresize for ns4
var origWidth, origHeight;
if (document.layers) {
	origWidth = window.innerWidth; origHeight = window.innerHeight;
	window.onresize = function() { if (window.innerWidth != origWidth || window.innerHeight != origHeight) history.go(0); }
}

var cur_lyr;	// holds id of currently visible layer
function swapLayers(id) {
  if (cur_lyr) hideLayer(cur_lyr);
  showLayer(id);
  cur_lyr = id;
}

function showLayer(id) {
  var lyr = getElemRefs(id);
  if (lyr && lyr.css) lyr.css.visibility = "visible";
}

function hideLayer(id) {
  var lyr = getElemRefs(id);
  if (lyr && lyr.css) lyr.css.visibility = "hidden";
}

function getElemRefs(id) {
	var el = (document.getElementById)? document.getElementById(id): (document.all)? document.all[id]: (document.layers)? document.layers[id]: null;
	if (el) el.css = (el.style)? el.style: el;
	return el;
}
	
/*function hideDetail() {
	if (ng5) document.getElementById('detail1').style.visibility = "hidden"
	else if (ns4) document.detail1.visibility = "hide"
	else if (ie4) detail1.style.visibility ="hidden"

	if (ng5) document.getElementById('detail2').style.visibility = "hidden"
	else if (ns4) document.detail2.visibility = "hide"
	else if (ie4) detail2.style.visibility ="hidden"

	if (ng5) document.getElementById('detail3').style.visibility = "hidden"
	else if (ns4) document.detail3.visibility = "hide"
	else if (ie4) detail3.style.visibility ="hidden"

	if (ng5) document.getElementById('detail4').style.visibility = "hidden"
	else if (ns4) document.detail4.visibility = "hide"
	else if (ie4) detail4.style.visibility ="hidden"

	if (ng5) document.getElementById('detail5').style.visibility = "hidden"
	else if (ns4) document.detail5.visibility = "hide"
	else if (ie4) detail5.style.visibility ="hidden"

	if (ng5) document.getElementById('detail6').style.visibility = "hidden"
	else if (ns4) document.detail6.visibility = "hide"
	else if (ie4) detail6.style.visibility ="hidden"
	}

function showDetail(n) {
	hideDetail();
	if (ng5) document.getElementById('detail' + n).style.visibility = "visible";
	else if (ns4) document.layers["detail" + n].visibility = "show";
	else if (ie4) document.all["detail" + n].style.visibility = "visible";
	}
*/