Hyperlinks cannot be configured to use "onclick" for javascript - causes failure in some browsers

Question

When you tell Muse a hyperlink points to a javascript function it uses a direct href to invoke it rather than using the "onclick" attribute. Although there are philosophical debates about which is better, they should both do the same thing. i.e.
<a href="#" onclick="javascript:window.open('http://www.google.com','','scrollbars=yes,width=720,height=700')">onclick</a>
<a href="javascript:window.open('http://www.google.com','','scrollbars=yes,width=720,height=700')">href</a>
- should do the same thing, and open a separate window to display the content.
Trouble is, for some of the most popular browsers, they don't. In Chrome, they both do the same thing, but In IE8, and Firefox 24.x they don't. The href version opens a popup OK, but the original window goes blank. It probably varies between browsers and versions (and the correct behaviour is that it should work), but the bottom line is that the onclick method works all the time.
IT would be ideal if you could choose if the hyperlink uses onclick or href to call the javascript, perhaps in the same submenu that lets you select opening in a new window.

Answer 1

Boot into Recovery by holding down the key combination command-R at the startup chime. Release the keys when you see a gray screen with a spinning dial.
Note: You need an always-on Ethernet or Wi-Fi connection to the Internet to use Recovery. It won’t work with USB or PPPoE modems, or with networks that require any kind of authentication other than a WPA or WPA2 Personal password.
From the Recovery screen, select Get Help Online. A clean copy of Safari will launch. No plugins, such as Flash, will be available. Test. After testing, reboot as usual and post the results.