Created attachment 823258 [details]
Steps to reproduce - video

Description of problem:
When on MAC OS - in firefox, the buttons for deleting data providers don't do anything (the other buttons work, e.g. for editing data provider properties)

Version-Release number of selected component (if applicable):
BPMS 6.0.0 ER4
MAC OS X version 10.7.3
Firefox 17

How reproducible:
Always

Steps to Reproduce:
1. I open the dashbuilder in firefox on MAC OS 
2. I navigate to workspace Showcase, page Data providers
3. I click the 'trash' (Delete data provider) icon for some data provider

Actual results:
Nothing happens 
- no dialog is popped up (with message that data provider is used in some KPIs)
- data provider is not deleted

Expected results:
The delete button should work as on other platforms:
1) when no KPIs using the provider exist, the data provider should be deleted
2) when there are KPIs using the provider, the alert "Can't delete provider because it is used in X KPIs" should be displayed (as was implemented in fix for https://bugzilla.redhat.com/show_bug.cgi?id=962681)

Additional info:
I also tried deleting my custom created data provider, which was not used in any KPIs - the problem was the same - nothing could be deleted, no feedback in UI.

I recorder video showing the problem.
In video I first try to delete the provider in MAC OS - doesn't work (note, that other buttons work - for example in video I click Edit provider properties) then I switch to fedora 19 + firefox 17 and it works as expected - alert is displayed that provider can't be deleted.