Replace the tab title with external url

Hi there,

I am new to drupal with limited php skill, appreciate for your kindly help.
I have created a 3 tabs page with Quicktabs, the first two are used to display formatted content, but the third one need to link to external website.
After doing some homework, I have some idea and write the following jQuery to do it.

	if ($quicktabs->machine_name == 'tabzone') {
		drupal_add_js('jQuery(document).ready(function($) {
			$("a#quicktabs-tab-tabzone-2").attr("href", "http://www.google.com");
		});', 'inline');
	}

However, it only replace the url displayed in browser's status bar not the html code.
It means, while moving the cursor to the third tab, the status bar shows "www.google.com", but still goto the original block after click.

Therefore, considering for my poor php skill, I am here to ask for some help.
If you find out the root cause, please give me some advice, really appreciate....