<div>
well since I can't see the HTML structure, I can only give a generic response, I will assume they are all DIV's like this: 
 
(div id=&quot;seasons&quot;) 
&nbsp; &nbsp;(div id=&quot;season1&quot;) 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(div id=&quot;episode&quot;) 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; (div id=&quot;song&quot;)(/div) 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(/div) 
&nbsp; &nbsp;(/div) 
&nbsp; &nbsp;(div id=&quot;season2&quot;) 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(div id=&quot;episode&quot;) 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; (div id=&quot;song&quot;)(/div) 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(/div) 
&nbsp; &nbsp;(/div) 
(/div) 
 
 
then you would do the following 

<pre><code class="code-10 nolinks" id="code-121149">function collapseAll(parentID) {
 element = document.getElementById(parentID);
 elements = element.getElementsByTagName(&quot;DIV&quot;);
 
 if (elements.length &gt; 0) {
 		for (x in elements) {
			collapseAll(elements[x].id);
		}
 } else {}
 
 //your collapse code
 collapseElement(element.id);
}
 
collapseAll(&quot;seasons&quot;);
</code></pre>
</div>

<div>
crap, apparently EE is now eating angle brackets. 
 
I'm assuming your divs are like this: 
(div id=&quot;myDiv1&quot; class=&quot;songDiv&quot;)...(/div)
</div>

<div>
Save this as test.html. Read the comments as you expand each Season. 

<pre><code class="code-10 nolinks" id="code-121197">&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.01 Transitional//EN&quot;
 &quot;http://www.w3.org/TR/html4/loose.dtd&quot;&gt;
 
&lt;html&gt;
&lt;head&gt;
&lt;title&gt;&lt;/title&gt;
&lt;style type=&quot;text/css&quot;&gt;
.episodes{display:none;}
&lt;/style&gt;
&lt;/head&gt;
&lt;body&gt;
&lt;script language=&quot;javascript&quot;&gt; 
function divshowhide(e){
	e.nextSibling.style.display = (e.nextSibling.style.display == &quot;block&quot; ? &quot;none&quot; : &quot;block&quot;);
} 
 
&lt;/script&gt; 
Links and divs:
&lt;div id=&quot;programs&quot;&gt;
	&lt;div onclick=&quot;divshowhide(this);&quot;&gt;Season 1&lt;/div&gt;
	&lt;div class=&quot;episodes&quot;&gt;
		&lt;div&gt;you can put whatever html you want in here - ex: div&lt;/div&gt;
	&lt;/div&gt;
 
	&lt;div onclick=&quot;divshowhide(this);&quot;&gt;Season 2&lt;/div&gt;
	&lt;div class=&quot;episodes&quot;&gt;
		&lt;ul&gt;
			&lt;li&gt;Like a list item&lt;/li&gt;
		&lt;/ul&gt;
	&lt;/div&gt;
 
	&lt;div onclick=&quot;divshowhide(this);&quot;&gt;Season 2&lt;/div&gt;
	&lt;ul class=&quot;episodes&quot;&gt;
		&lt;li&gt;You can even use a ul immediately after the Season to hold all the episodes&lt;/li&gt;
		&lt;li&gt;Meaning - you don't have to use a div immediately after the season div&lt;/li&gt;
	&lt;/ul&gt;
 
 
 
	&lt;div onclick=&quot;divshowhide(this);&quot;&gt;Season 3&lt;/div&gt;
	&lt;div class=&quot;episodes&quot;&gt;
		&lt;ul&gt;
			&lt;li&gt;Just make sure they are contained within div id=programs&lt;/li&gt;
			&lt;li&gt;AND the Season div is right before its corresponding episodes&lt;/li&gt;
		&lt;/ul&gt;
	&lt;/div&gt;
 
	
&lt;/div&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>
</div>

<div>
Here is the structure snippet... &nbsp;Sorry I did not include it before. 

<pre><code class="code-100 nolinks" id="code-121779">&lt;input type=&quot;checkbox&quot; id=&quot;toggleSongs&quot; onclick=&quot;toggleAll(this)&quot; /&gt;&lt;span&gt;Toggle All Songs&lt;/span&gt;
&lt;input type=&quot;checkbox&quot; id=&quot;toggleEpisodes&quot; onclick=&quot;toggleAll(this)&quot; /&gt;&lt;span&gt;Toggle All Episodes&lt;/span&gt;
 
&lt;div class=&quot;season&quot;&gt;
&lt;div class=&quot;title&quot;&gt;
&lt;img src=&quot;images/image012.jpg&quot; onclick=&quot;toggleVisibility('season6')&quot;/&gt;
&lt;h2 onclick=&quot;toggleVisibility('season6')&quot;&gt;Season 6&lt;/h2&gt;
&lt;/div&gt;
 
&lt;div class=&quot;songs&quot;&gt;
&lt;div style=&quot;display:none&quot; class=&quot;episodeList&quot; id=&quot;season6&quot;&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.00')&quot;&gt;6.00 Promo Music&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.00&quot;&gt;
 &lt;p&gt;01 Bloc Party - The Prayer (3:44)&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.03')&quot;&gt;6.03 Wither (airdate 10/12/06)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.03&quot;&gt;
 &lt;p&gt;02 Telepictures - Dark (3:49)&lt;/p&gt;
 &lt;p&gt;03 Telepictures - Club Young (3:48)&lt;/p&gt;
 &lt;p&gt;04 Fred Spigelman - I Wont Wait (2:54)&lt;/p&gt;
 &lt;p&gt;05 The All American Rejects - It Ends Tonight (4:04)&lt;/p&gt;
 &lt;p&gt;06 James Carrington - Ache (Demo Version) (5:16)&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.04')&quot;&gt;6.04 Arrow (airdate 10/19/06)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.04&quot;&gt;
 &lt;p&gt;07 Johann Sebastian Bach - Goldberg Variations (Variation 21) (1:38)&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.05')&quot;&gt;6.05 Reunion (airdate 10/26/06)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.05&quot;&gt;
 &lt;p&gt;08 Brian Wayy - Ease My Pain (4:58)&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.06')&quot;&gt;6.06 Fallout (airdate (11/02/06)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.06&quot;&gt;
 &lt;p&gt;09 Bow Wow - Fresh Azimiz (4:31)&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.07')&quot;&gt;6.07 Rage (airdate 11/09/06)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.07&quot;&gt;
 &lt;p&gt;10 Josh Kelley - Cain And Able (5:02)&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.09')&quot;&gt;6.09 Subterranean (airdate 12/07/06)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.09&quot;&gt;
 &lt;p&gt;11 AFI - Prelude 12/21 (1:42)&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.10')&quot;&gt;6.10 Hydro (airdate 01/11/07)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.10&quot;&gt;
 &lt;p&gt;12 Jay Condiotti - Ill Wait For You (3:09)&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.11')&quot;&gt;6.11 Justice (airdate 01/18/07)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.11&quot;&gt;
 &lt;p&gt;13 Greg Laswell - High And Low (4:00)&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.12')&quot;&gt;6.12 Labyrinth (airdate 01/05/07)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.12&quot;&gt;
 &lt;p&gt;&lt;span&gt;Chris Heifner - Yesterday (Demo Version) (listed under 2.07 Lineage)&lt;/span&gt;&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.13')&quot;&gt;6.13 Crimson (airdate 02/01/07)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.13&quot;&gt;
 &lt;p&gt;14 Ginger - Our Finest Hour (3:59)&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.14')&quot;&gt;6.14 Trespass (airdate 02/08/07)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.14&quot;&gt;
 &lt;p&gt;15 Rise Against - Roadside (3:23)&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.15')&quot;&gt;6.15 Freak (airdate 02/15/07)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.15&quot;&gt;
 &lt;p&gt;16 Dirty Children - Money (3:25)&lt;/p&gt;
 &lt;p&gt;17 Samantha Mollen - Closer To You (4:07)&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.16')&quot;&gt;6.16 Promise (airdate 03/15/07)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.16&quot;&gt;
 &lt;p&gt;18 Snow Patrol - You Could Be Happy (3:02)&lt;/p&gt;
 &lt;p&gt;19 Georges Frideric Handel - Cathedral Largo (2:21)&lt;/p&gt;
 &lt;p&gt;20 Johann Sebastian Bach - Toccata And Fugue In D Minor (9:27)&lt;/p&gt;
 &lt;p&gt;21 Johann Sebastian Bach - Cathedral Prelude B (2:32)&lt;/p&gt;
 &lt;p&gt;22 Richard Wagner - Bridal Chorus (1:44)&lt;/p&gt;
 &lt;p&gt;23 Felix Mendelssohn - A Midsummer Nights Dream (Wedding March) (1:19)&lt;/p&gt;
 &lt;p&gt;24 Patty Griffin - Heavenly Day (3:45)&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.18')&quot;&gt;6.18 Progeny (airdate 04/19/07)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.18&quot;&gt;
 &lt;p&gt;25 Telepictures - Steppin (2:56)&lt;/p&gt;
 &lt;p&gt;26 Brian Wayy - As You Get Closer (3:30)&lt;/p&gt;
 &lt;p&gt;27 Telepictures - Scruggs (1:03)&lt;/p&gt;
 &lt;p&gt;28 Fred Spigelman - Figured Out Love (2:48)&lt;/p&gt;
 &lt;p&gt; 29 Richard Wagner - The Flying Dutchman (Overture) (10:49)&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.19')&quot;&gt;6.19 Nemesis (airdate 04/26/07)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.19&quot;&gt;
 &lt;p&gt;30 Richard Wagner - Tannhauser (Overture) (9:51)&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.20')&quot;&gt;6.20 Noir (airdate 05/03/07)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.20&quot;&gt;
 &lt;p&gt;31 Maxayn - The Finger Points To You (Instrumental) (2:55)&lt;/p&gt;
 &lt;p&gt;32 Vanessa Rojo - Somebody Else (3:06)&lt;/p&gt;
 &lt;/div&gt;
 &lt;h3 onclick=&quot;toggleVisibility('6.21')&quot;&gt;6.21 Prototype (airdate 05/10/07)&lt;/h3&gt;
 &lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.21&quot;&gt;
 &lt;p&gt;33 Julie Gribble - Is This Where (3:03)&lt;/p&gt;
 &lt;p&gt;34 Mark Snow - End Credits III (0:20)&lt;/p&gt;
 &lt;/div&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;/div&gt;
</code></pre>
</div>

<div>
Here is the final code snippet in case anyone else could use it. &nbsp;Thank you so much for your help and your quick response! 
 
//openDiv defines the desired state of the divs 
function toggleDivs(classNm, openDiv) { 
&nbsp; var allDivs = document.getElementsByTagName(&quot;div&quot;); 
&nbsp; for (var i = 0; i &lt;&nbsp;allDivs.length; i++){ 
&nbsp; &nbsp; if (allDivs[i].className.match(classNm)){ 
&nbsp; &nbsp; &nbsp; // yay! we've found a songDiv. Now, do something with it 
&nbsp; &nbsp; &nbsp; var div = allDivs[i]; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;if (openDiv == false) { 
&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;div.style.display = &quot;none&quot;; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;} 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;else { 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; div.style.display = &quot;block&quot;; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;} 
&nbsp; &nbsp; } 
&nbsp; } 
}
</div>

<div>
I made another copy of the entire season 6 and labeled it as season 7 so you can see how to integrate other seasons. Save it as test.html and try it. 

<pre><code class="code-100 nolinks" id="code-121823">&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.01 Transitional//EN&quot;
 &quot;http://www.w3.org/TR/html4/loose.dtd&quot;&gt;
 
&lt;html&gt;
&lt;head&gt;
&lt;title&gt;&lt;/title&gt;
&lt;style type=&quot;text/css&quot;&gt;
.episodes{display:none;}
&lt;/style&gt;
 
&lt;script language=&quot;javascript&quot;&gt; 
var c=null;
function divshowhide(e){
	e.nextSibling.style.display = (e.nextSibling.style.display == &quot;none&quot; ? &quot;block&quot; : &quot;none&quot;);
} 
function toggleAll(o)
{
	if( c === null )
		c = document.getElementById(&quot;container&quot;);
 
	if(o.id==&quot;toggleSongs&quot;)
	{
		h=c.getElementsByTagName(&quot;h2&quot;)
		for( var i=0; i &lt; h.length; ++i)
		{
			divshowhide(h[i].parentNode);
		}
	}
	else if(o.id==&quot;toggleEpisodes&quot;)
	{
		h=c.getElementsByTagName(&quot;h3&quot;)
		for( var i=0; i &lt; h.length; ++i)
		{
			divshowhide(h[i]);
		}
	}
 
}
&lt;/script&gt; 
&lt;/head&gt;
&lt;body&gt;
&lt;input type=&quot;checkbox&quot; id=&quot;toggleSongs&quot; onclick=&quot;toggleAll(this)&quot; /&gt;&lt;span&gt;Toggle All Songs&lt;/span&gt;
&lt;input type=&quot;checkbox&quot; id=&quot;toggleEpisodes&quot; onclick=&quot;toggleAll(this)&quot; /&gt;&lt;span&gt;Toggle All Episodes&lt;/span&gt;
 
&lt;div class=&quot;season&quot; id=&quot;container&quot;&gt;
 
	&lt;div class=&quot;title&quot;&gt;
		&lt;img src=&quot;images/image012.jpg&quot; onclick=&quot;toggleVisibility('season6')&quot;/&gt;
		&lt;h2 onclick=&quot;divshowhide(this.parentNode)&quot;&gt;Season 6&lt;/h2&gt;
	&lt;/div&gt;
 
	&lt;div style=&quot;display:none&quot; class=&quot;episodeList&quot; id=&quot;season6&quot;&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.00 Promo Music&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.00&quot;&gt;
				&lt;p&gt;01 Bloc Party - The Prayer (3:44)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.03 Wither (airdate 10/12/06)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.03&quot;&gt;
				&lt;p&gt;02 Telepictures - Dark (3:49)&lt;/p&gt;
				&lt;p&gt;03 Telepictures - Club Young (3:48)&lt;/p&gt;
				&lt;p&gt;04 Fred Spigelman - I Won.t Wait (2:54)&lt;/p&gt;
				&lt;p&gt;05 The All American Rejects - It Ends Tonight (4:04)&lt;/p&gt;
				&lt;p&gt;06 James Carrington - Ache (Demo Version) (5:16)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.04 Arrow (airdate 10/19/06)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.04&quot;&gt;
				&lt;p&gt;07 Johann Sebastian Bach - Goldberg Variations (Variation 21) (1:38)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.05 Reunion (airdate 10/26/06)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.05&quot;&gt;
				&lt;p&gt;08 Brian Wayy - Ease My Pain (4:58)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.06 Fallout (airdate (11/02/06)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.06&quot;&gt;
				&lt;p&gt;09 Bow Wow - Fresh Azimiz (4:31)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.07 Rage (airdate 11/09/06)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.07&quot;&gt;
				&lt;p&gt;10 Josh Kelley - Cain And Able (5:02)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.09 Subterranean (airdate 12/07/06)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.09&quot;&gt;
				&lt;p&gt;11 AFI - Prelude 12/21 (1:42)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.10 Hydro (airdate 01/11/07)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.10&quot;&gt;
				&lt;p&gt;12 Jay Condiotti - I.ll Wait For You (3:09)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.11 Justice (airdate 01/18/07)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.11&quot;&gt;
				&lt;p&gt;13 Greg Laswell - High And Low (4:00)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.12 Labyrinth (airdate 01/05/07)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.12&quot;&gt;
				&lt;p&gt;&lt;span&gt;Chris Heifner - Yesterday (Demo Version) (listed under 2.07 Lineage)&lt;/span&gt;&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.13 Crimson (airdate 02/01/07)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.13&quot;&gt;
				&lt;p&gt;14 Ginger - Our Finest Hour (3:59)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.14 Trespass (airdate 02/08/07)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.14&quot;&gt;
				&lt;p&gt;15 Rise Against - Roadside (3:23)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.15 Freak (airdate 02/15/07)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.15&quot;&gt;
				&lt;p&gt;16 Dirty Children - Money (3:25)&lt;/p&gt;
				&lt;p&gt;17 Samantha Mollen - Closer To You (4:07)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.16 Promise (airdate 03/15/07)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.16&quot;&gt;
				&lt;p&gt;18 Snow Patrol - You Could Be Happy (3:02)&lt;/p&gt;
				&lt;p&gt;19 Georges Frideric Handel - Cathedral Largo (2:21)&lt;/p&gt;
				&lt;p&gt;20 Johann Sebastian Bach - Toccata And Fugue In D Minor (9:27)&lt;/p&gt;
				&lt;p&gt;21 Johann Sebastian Bach - Cathedral Prelude B (2:32)&lt;/p&gt;
				&lt;p&gt;22 Richard Wagner - Bridal Chorus (1:44)&lt;/p&gt;
				&lt;p&gt;23 Felix Mendelssohn - A Midsummer Night.s Dream (Wedding March) (1:19)&lt;/p&gt;
				&lt;p&gt;24 Patty Griffin - Heavenly Day (3:45)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.18 Progeny (airdate 04/19/07)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.18&quot;&gt;
 	&lt;p&gt;25 Telepictures - Steppin. (2:56)&lt;/p&gt;
 	&lt;p&gt;26 Brian Wayy - As You Get Closer (3:30)&lt;/p&gt;
 	&lt;p&gt;27 Telepictures - Scruggs (1:03)&lt;/p&gt;
 	&lt;p&gt;28 Fred Spigelman - Figured Out Love (2:48)&lt;/p&gt;
 	&lt;p&gt; 29 Richard Wagner - The Flying Dutchman (Overture) (10:49)&lt;/p&gt;
 			&lt;/div&gt;
 
 	&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.19 Nemesis (airdate 04/26/07)&lt;/h3&gt;
 	&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.19&quot;&gt;
 		&lt;p&gt;30 Richard Wagner - Tannhauser (Overture) (9:51)&lt;/p&gt;
 	&lt;/div&gt;
 
 	&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.20 Noir (airdate 05/03/07)&lt;/h3&gt;
 	&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.20&quot;&gt;
 		&lt;p&gt;31 Maxayn - The Finger Points To You (Instrumental) (2:55)&lt;/p&gt;
 		&lt;p&gt;32 Vanessa Rojo - Somebody Else (3:06)&lt;/p&gt;
 	&lt;/div&gt;
 
 	&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.21 Prototype (airdate 05/10/07)&lt;/h3&gt;
 	&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.21&quot;&gt;
 		&lt;p&gt;33 Julie Gribble - Is This Where (3:03)&lt;/p&gt;
 		&lt;p&gt;34 Mark Snow - End Credits III (0:20)&lt;/p&gt;
 	&lt;/div&gt;
	&lt;/div&gt;
 
 
	&lt;div class=&quot;title&quot;&gt;
		&lt;img src=&quot;images/image012.jpg&quot; onclick=&quot;toggleVisibility('season7')&quot;/&gt;
		&lt;h2 onclick=&quot;divshowhide(this.parentNode)&quot;&gt;Season 7&lt;/h2&gt;
	&lt;/div&gt;
 
	&lt;div style=&quot;display:none&quot; class=&quot;episodeList&quot; id=&quot;season6&quot;&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.00 Promo Music&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.00&quot;&gt;
				&lt;p&gt;01 Bloc Party - The Prayer (3:44)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.03 Wither (airdate 10/12/06)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.03&quot;&gt;
				&lt;p&gt;02 Telepictures - Dark (3:49)&lt;/p&gt;
				&lt;p&gt;03 Telepictures - Club Young (3:48)&lt;/p&gt;
				&lt;p&gt;04 Fred Spigelman - I Won.t Wait (2:54)&lt;/p&gt;
				&lt;p&gt;05 The All American Rejects - It Ends Tonight (4:04)&lt;/p&gt;
				&lt;p&gt;06 James Carrington - Ache (Demo Version) (5:16)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.04 Arrow (airdate 10/19/06)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.04&quot;&gt;
				&lt;p&gt;07 Johann Sebastian Bach - Goldberg Variations (Variation 21) (1:38)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.05 Reunion (airdate 10/26/06)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.05&quot;&gt;
				&lt;p&gt;08 Brian Wayy - Ease My Pain (4:58)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.06 Fallout (airdate (11/02/06)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.06&quot;&gt;
				&lt;p&gt;09 Bow Wow - Fresh Azimiz (4:31)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.07 Rage (airdate 11/09/06)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.07&quot;&gt;
				&lt;p&gt;10 Josh Kelley - Cain And Able (5:02)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.09 Subterranean (airdate 12/07/06)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.09&quot;&gt;
				&lt;p&gt;11 AFI - Prelude 12/21 (1:42)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.10 Hydro (airdate 01/11/07)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.10&quot;&gt;
				&lt;p&gt;12 Jay Condiotti - I.ll Wait For You (3:09)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.11 Justice (airdate 01/18/07)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.11&quot;&gt;
				&lt;p&gt;13 Greg Laswell - High And Low (4:00)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.12 Labyrinth (airdate 01/05/07)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.12&quot;&gt;
				&lt;p&gt;&lt;span&gt;Chris Heifner - Yesterday (Demo Version) (listed under 2.07 Lineage)&lt;/span&gt;&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.13 Crimson (airdate 02/01/07)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.13&quot;&gt;
				&lt;p&gt;14 Ginger - Our Finest Hour (3:59)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.14 Trespass (airdate 02/08/07)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.14&quot;&gt;
				&lt;p&gt;15 Rise Against - Roadside (3:23)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.15 Freak (airdate 02/15/07)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.15&quot;&gt;
				&lt;p&gt;16 Dirty Children - Money (3:25)&lt;/p&gt;
				&lt;p&gt;17 Samantha Mollen - Closer To You (4:07)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.16 Promise (airdate 03/15/07)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.16&quot;&gt;
				&lt;p&gt;18 Snow Patrol - You Could Be Happy (3:02)&lt;/p&gt;
				&lt;p&gt;19 Georges Frideric Handel - Cathedral Largo (2:21)&lt;/p&gt;
				&lt;p&gt;20 Johann Sebastian Bach - Toccata And Fugue In D Minor (9:27)&lt;/p&gt;
				&lt;p&gt;21 Johann Sebastian Bach - Cathedral Prelude B (2:32)&lt;/p&gt;
				&lt;p&gt;22 Richard Wagner - Bridal Chorus (1:44)&lt;/p&gt;
				&lt;p&gt;23 Felix Mendelssohn - A Midsummer Night.s Dream (Wedding March) (1:19)&lt;/p&gt;
				&lt;p&gt;24 Patty Griffin - Heavenly Day (3:45)&lt;/p&gt;
			&lt;/div&gt;
 
			&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.18 Progeny (airdate 04/19/07)&lt;/h3&gt;
			&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.18&quot;&gt;
 	&lt;p&gt;25 Telepictures - Steppin. (2:56)&lt;/p&gt;
 	&lt;p&gt;26 Brian Wayy - As You Get Closer (3:30)&lt;/p&gt;
 	&lt;p&gt;27 Telepictures - Scruggs (1:03)&lt;/p&gt;
 	&lt;p&gt;28 Fred Spigelman - Figured Out Love (2:48)&lt;/p&gt;
 	&lt;p&gt; 29 Richard Wagner - The Flying Dutchman (Overture) (10:49)&lt;/p&gt;
 			&lt;/div&gt;
 
 	&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.19 Nemesis (airdate 04/26/07)&lt;/h3&gt;
 	&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.19&quot;&gt;
 		&lt;p&gt;30 Richard Wagner - Tannhauser (Overture) (9:51)&lt;/p&gt;
 	&lt;/div&gt;
 
 	&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.20 Noir (airdate 05/03/07)&lt;/h3&gt;
 	&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.20&quot;&gt;
 		&lt;p&gt;31 Maxayn - The Finger Points To You (Instrumental) (2:55)&lt;/p&gt;
 		&lt;p&gt;32 Vanessa Rojo - Somebody Else (3:06)&lt;/p&gt;
 	&lt;/div&gt;
 
 	&lt;h3 onclick=&quot;divshowhide(this)&quot;&gt;6.21 Prototype (airdate 05/10/07)&lt;/h3&gt;
 	&lt;div style=&quot;display:none&quot; class=&quot;songList&quot; id=&quot;6.21&quot;&gt;
 		&lt;p&gt;33 Julie Gribble - Is This Where (3:03)&lt;/p&gt;
 		&lt;p&gt;34 Mark Snow - End Credits III (0:20)&lt;/p&gt;
 	&lt;/div&gt;
	&lt;/div&gt;
&lt;/div&gt;
 
&lt;/body&gt;
&lt;/html&gt;
</code></pre>
</div>

<div>
Here is the final code snippet in case anyone else could use it. 

<pre><code class="code-10 nolinks" id="code-121825">//openDiv defines the desired state of the div
function toggleDivs(classNm, openDiv) {
 var allDivs = document.getElementsByTagName(&quot;div&quot;);
 for (var i = 0; i &lt; allDivs.length; i++){
 if (allDivs[i].className.match(classNm)){
 // yay! we've found a songDiv. Now, do something with it
 var div = allDivs[i];
 if (openDiv == false) {
 	div.style.display = &quot;none&quot;;
 }
 else {
	div.style.display = &quot;block&quot;;
 }
 }
 }
}
</code></pre>
</div>

<div>
hielo, 
 
Thank you for your input. &nbsp;Your code snippet is wonderful as well, but was slightly more complex and relied more on the structure &nbsp;than that of tomaugerdotcom which is what I have ultimately implemented.
</div>

<div>
<div class="content wysiwyg-content">
Ok, so i have browsed you site for an answer to my question and although this one comes close (<a href="https://www.experts-exchange.com/questions/23485838/Toggle-multiple-DIV-items-from-one-link-but-not-ALL-divs.html" rel="ugc">https://www.experts-exchange.com/questions/23485838/Toggle-multiple-DIV-items-from-one-link-but-not-ALL-divs.html</a>), it still is not quite what I need. &nbsp;I am building a song list for my friend with over 600 songs in it broken down into seasons and episodes(its for a TV series reference). &nbsp;Anyway there is no DB or anything so it is hand-coded in HTML. &nbsp;There are 8 seasons and approx. 24 episodes per season (approx 200 arguments). &nbsp;I already have functionality for expanding the seasons to view the episodes and the episodes to view the songs for that episode, however I now find myself needing a convenient way to expand/collapse all the seasons and all the episodes without passing in each ID, &nbsp;just class name. &nbsp;As the list will grow with each passing season, I cannot hardcode it either. &nbsp;Any suggestions?
</div>
</div>

Ok, so i have browsed you site for an answer to my question and although this one comes close (http://www.experts-exchange.com/Programming/Languages/Scripting/Q_23485838.html), it still is not quite what I need.  I am building a song list for my friend with over 600 songs in it broken down into seasons and episodes(its for a TV series reference).  Anyway there is no DB or anything so it is hand-coded in HTML.  There are 8 seasons and approx. 24 episodes per season (approx 200 arguments).  I already have functionality for expanding the seasons to view the episodes and the episodes to view the songs for that episode, however I now find myself needing a convenient way to expand/collapse all the seasons and all the episodes without passing in each ID,  just class name.  As the list will grow with each passing season, I cannot hardcode it either.  Any suggestions?

Toggle all on  MANY divs

A scripting language is a programming language that supports scripts, programs written for a special run-time environment that automate the execution of tasks that could alternatively be executed one-by-one by a human operator. Scripting languages are often interpreted (rather than compiled). Primitives are usually the elementary tasks or API calls, and the language allows them to be combined into more complex programs. Environments that can be automated through scripting include software applications, web pages within a web browser, the shells of operating systems (OS), embedded systems, as well as numerous games. A scripting language can be viewed as a domain-specific language for a particular environment; in the case of scripting an application, this is also known as an extension language.

Scripting Languages

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.