Error with empty TextArea in firefox

[erikzaadi]

In Firefox, when you try to print an area containing an empty textarea, line 131 this.firstChild.textContent = value;
throws an error:
Error: this.firstChild is null
Source File: jquery.printElement.js Line: 131

Checking for the value helped in my case:
if ($.browser.mozilla && value!=="")

Stef
(http://plugins.jquery.com/node/13503)