Cant get my javascript function? -

I have this simple format function:

  function form (x, y): {Var handler = function (e) {document.getElementById (x) .innerHTML = number (this.value * 100) .toLocaleString () + "Centimes"; }; Document.getElementById (y) .onchange = Handler; Document.getElementById (y) .onkeyup = Handler; }   
 and named it  formatter.js   
 Now, I try to use it on an HTML page, it starts Loading:  
  & lt; Script src = "path / to / formatter.js" & gt; & Lt; / Script & gt;   
 It loads properly! But when I put it:  
  & lt; Input id = "value" & gt; & Lt; Script & gt; Form ("HHH", "Value"); & Lt; / Script & gt; & Lt; H1 id = "hhh" & gt; & Lt; / H1>   
 The console says that  form  is not defined!   
        Y) {...} // or forma = function (x, y) {. ..}   
 should work fine