Adding a reference to external .js file in your form

This code creates a new script element and inserts it into the head of the HTML document that defines the form:

st = document.createElement("<script src='http://<server>/<site>/<filename>.js' language='JavaScript'>");
h = document.getElementsByTagName('head');
h[0].insertAdjacentElement('beforeEnd',st);

Using this method to reference an external script in a production environment is unsupported because it introduces several areas for concern:

• Transportability
• External Site
• Doesn't work offline
• Future Upgrade issues
• Possible Timing issues
• Poor programming practice