// JavaScript Document
/*************************************************************************
  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 showHideLayer(box, div) {
	if (box.checked == true) {
		showLayer(div);
	}
	else {
		hideLayer(div);
	}
}

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

function hideLayer(id) {
  var lyr = getElemRefs(id);
  if (lyr && lyr.css) {
	  lyr.css.visibility = "hidden";
	  lyr.css.display = "none";
  }
}

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 launchCenter(url, name, height, width) {
  //return window.open(url, name, str);
  strWin = window.open(url, name);
  strWin.focus();
}
function externalLink(site) {
	window.open(site);
}