title: conditional display of html element forms
body: <p>Well, after a one hour introduction to javascript, I ve come up with the following code. It did what I wanted alright, but then I wanted something else and it wont work.</p>
  
  <p>I wanted that upon clicking on a button, a certain field would hide and on clicking on another yes, another one would hide too, BUT, of course, it had to make the other show, otherwise we would end up with nothing and the purpose was to present different fields depending on what the user clicked (on a radio button) So in a childish way I made my code and it worked. But then it came to me that I wanted first to have boths fields hidden instead of both fields shown, and here is the issue. I added a 0 value to the parameter of the function "telling it" that when x = 0, then visibility = hidden. But it wont listen to me!, So, the part of the code when it says x = 1 and 2 works, the one about 0, does not.</p>
  
  <p>It is such a simple code that can make someone smile, but heck, it was clean and it worked. Does anyone know how to have the fields hidden before clicking on the buttons ?</p>
  
  <p>Thanks a lot I remove some tags of the HTML</p>
  
  <pre><code>&lt;html&gt;
      &lt;head&gt;
          &lt;script language="javascript"&gt;
              var x = 0;
  
              function hola(x) {
                  if(x == 0) {
                      document.getElementById("cont1").style.visibility="hidden";
                      document.getElementById("cont2").style.visibility="hidden";
                  }
  
                  if(x == 1) {
                      document.getElementById("cont1").style.visibility="visible";
                      document.getElementById("cont2").style.visibility="hidden"; 
                  }
  
                  if(x == 2)  {
                      document.getElementById("cont1").style.visibility="hidden";
                      document.getElementById("cont2").style.visibility="visible"; 
                  }
              }
          &lt;/script&gt;
      &lt;/head&gt;
  
      &lt;body&gt;
          &lt;input type="button" onclick="hola(1)" value="hidefield2" id="boton1"&gt;
          &lt;div id="cont1"&gt;
              &lt;input type="text"&gt;
          &lt;/div&gt;
  
          &lt;input type="button" onclick="hola(2)" value="hidefield1" id="boton2"&gt;
  
          &lt;div id="cont2"&gt;
              &lt;input type="text"&gt;
          &lt;/div&gt;
      &lt;/body&gt;
  &lt;html&gt;
  </code></pre>