invalid label on firefox javascript error
<p>Can somebody find out whats going wrong with this piece of code, I get Invalid label error on my firebug console.</p>

<pre><code>&lt;script type="text/javascript"&gt;
        var a = function(){
       this.prop1:"value1", //Error here
       this.prop2:"value2"
    }
        var b = new a();
 &lt;/script&gt;
</code></pre>
