title: Javascript works only on firefox
body: <p>So, yea, i have some long long script, which is really simple, so let's me just cut off not-necessary fragments that doesn't change anything.
  Problem is, that javascript is working only on firefox. I tried it on google chrome, IE, Opera - didn't work. My friends tried too and yea, same.
  Problem is that i searched miles of internet and couldn't find reason why i got stuck.
  Maybe you are smart enaugh to know what's going on.</p>
  
  <pre><code>$(document).ready(function() {
   $('option').click(function() {     
          var currentdi =  document.getElementById('currentdi').value;
          var currentle = document.getElementById('currentleague').value; 
                 var aimdi = document.getElementById('aimdi').value;
          var aimle = document.getElementById('aimleague').value;     
  if (currentdi == "bronze"){
              if (currentle == "1"){
              var wart = "125";
              }else if (currentle == "2"){
              var wart = "100";
  }
  if (aimdi == "silver"){
              if (aimle == "1"){
              var wart2 = "300";
              }else if (aimle == "2"){
              var wart2 = "265";
  }
  var roznica = wartosc2-wartosc;
          if (roznica &lt; 25){
          $('#valuation').text('Sorry, not possible');
          }else{
          $('#valuation').text(roznica);
          }
  
          return false;
      });
      });
  </code></pre>
  
  <p>And HTML:</p>
  
  <pre><code>&lt;form  action="" method="POST" enctype="multipart/form-data"&gt;
      &lt;select id="currentdi" class="categorylist" name="currentname"&gt;
          &lt;option value="bronze" selected&gt;Bronze&lt;/option&gt;
          &lt;option value="silver"&gt;Silver&lt;/option&gt;      
      &lt;/select&gt;
      &lt;select id="currentleague" class="categorylist" name="currentnumber"&gt;
          &lt;option value="1"&gt;Division I&lt;/option&gt;
          &lt;option value="2"&gt;Division II&lt;/option&gt;
          &lt;/select&gt;
  
      &lt;/form&gt;
  &lt;div id="aimdiv"&gt;           
      &lt;form  action="" method="POST" enctype="multipart/form-data"&gt;
      &lt;select id="aimdi" class="categorylist" name="aimname"&gt;
          &lt;option value="bronze" selected&gt;Bronze&lt;/option&gt;
          &lt;option value="silver"&gt;Silver&lt;/option&gt;  
      &lt;/select&gt;
      &lt;select id="aimleague" class="categorylist" name="aimnumber"&gt;
          &lt;option value="1" selected&gt;Division I&lt;/option&gt;
          &lt;option value="2"&gt;Division II&lt;/option&gt;
          &lt;/select&gt;
      &lt;/form&gt;
  </code></pre>
  
  <p>So yeah, that's all, still trying to get it worked on other browsers... but don't know how.</p>
  
  <p>Please, can you help me?</p>