function hideanswers() {
    var faqDiv = document.getElementById('faq')
    var answerDivs = faqDiv.getElementsByTagName('div');
    for ( var i=0, len=answerDivs.length; i<len; ++i ){
            answerDivs[i].style.display = 'none';
    }
}

function hideAllContentDivsExt() {
    var contentDivs = document.getElementsByClassName('contentdiv');
    for ( var i=0, len=contentDivs.length; i<len; ++i ){
            hidediv(contentDivs[i].id);
    }
}

function hidediv(id) {
    var state = document.getElementById(id).style.display;
    if (state != 'none')
        document.getElementById(id).style.display = 'none';
}

function hideAllContentDivs() {
    var contentDivs = document.getElementsByClassName('contentdiv');
    for ( var i=0, len=contentDivs.length; i<len; ++i ){
            hidediv(contentDivs[i].id);
    }
}

function toggle(id) {
    var state = document.getElementById(id).style.display;
        if (state == 'block') {
            document.getElementById(id).style.display = 'none';
        } else {
            document.getElementById(id).style.display = 'block';
        }
    }  
    
function showDiv(id) {
    hideAllContentDivs();
    if (id == '')
        id='contentdescription'
    toggle(id);
    }
    
function gup( name )
{
  name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  var regexS = "[\\?&]"+name+"=([^&#]*)";
  var regex = new RegExp( regexS );
  var results = regex.exec( window.location.href );
  if( results == null )
    return "";
  else
    return results[1];
}
                
onload=function(){
if (document.getElementsByClassName == undefined) {
    document.getElementsByClassName = function(className)
    {
        var hasClassName = new RegExp("(?:^|\\s)" + className + "(?:$|\\s)");
        var allElements = document.getElementsByTagName("*");
        var results = [];

        var element;
        for (var i = 0; (element = allElements[i]) != null; i++) {
            var elementClass = element.className;
            if (elementClass && elementClass.indexOf(className) != -1 && hasClassName.test(elementClass))
                results.push(element);
        }

        return results;
    }
}
}


/* This script and many more are available free online at
The JavaScript Source!! http://javascript.internet.com
Created by: Jay M. Rumsey, OD | http://www.nova.edu/~rumsey */

var num=0;

imgArray = [
  ['pix1-sm.gif','information', 'The beautiful mountains'],
  ['pix2-sm.gif','interference','The crystal clear lake'],
  ['pix3-sm.gif','message','The lonesome, barren tree']
]

function slideshow(slide_num) {
  document.getElementById('mypic').src=imgArray[slide_num][0];
  document.getElementById('mypic').alt=imgArray[slide_num][1];
  document.getElementById('burns').innerHTML=imgArray[slide_num][2];
}

function slideshowUp() {
  num++;
  num = num % imgArray.length;
  slideshow(num);
}

function slideshowBack() {
  num--;
  if (num < 0) {num=imgArray.length-1;}
  num = num % imgArray.length;
  slideshow(num);
}

// var gal = {
// init : function() {
// if (!document.getElementById || !document.createElement || !document.appendChild) return false;
// if (document.getElementById('gallery')) document.getElementById('gallery').id = 'jgal';
// var li = document.getElementById('jgal').getElementsByTagName('li');
// li[0].className = 'active';
// for (i=0; i<li.length; i++) {
// li[i].style.backgroundImage = 'url(' + li[i].getElementsByTagName('img')[0].src + ')';
// li[i].title = li[i].getElementsByTagName('img')[0].alt;
// gal.addEvent(li[i],'click',function() {
// var im = document.getElementById('jgal').getElementsByTagName('li');
// for (j=0; j<im.length; j++) {
// im[j].className = '';
// }
// this.className = 'active';
// });
// }
// },
// addEvent : function(obj, type, fn) {
// if (obj.addEventListener) {
// obj.addEventListener(type, fn, false);
// }
// else if (obj.attachEvent) {
// obj["e"+type+fn] = fn;
// obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
// obj.attachEvent("on"+type, obj[type+fn]);
// }
// }
// }
// gal.addEvent(window,'load', function() {
// gal.init();
// });