Simsso: Java Script Problem

Beitrag lesen

HI,
Erkennt hier jemand einen Syntax Fehler?

<?xml version="1.0"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
  <head>
    <title>New Document</title>
    <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
    <script type="text/javascript">
     function gross() {
       var wert = this.style.width;
       var jetzt = wert.replace(/px/g, '');
       var weiter = Number(jetzt) + Number(100)
       this.style.width = weiter + 'px';
     }
    </script>
  </head>
  <body>
    <form name="form">
     <input type="text" style="width: 100px; " name="input" onfocus="gross()" />
    </form>
  </body>
</html>
Gruß