I'm honestly not sure what's happening, but I don't think it's an SCLogin-specific issue. I logged into the admin area of your site and disabled the SCLogin module and the slideshow still didn't work for me. After some more investigation, I realized that you had set the "Debug System" setting in the Joomla Global Configuration area turned on.
With that setting enabled, the slideshow also doesn't work. In both cases, the javascript console in the browser reports:
Uncaught TypeError: undefined is not a function jquery-ui-1.9.2.custom.js?v=1414157958:170
I'm not sure what that error is, but the file is being loaded from JomRes. The slideshow looks to be Vina Camera Image Slider. Why the error occurs when the SCLogin module *or* the Debug System mode is enabled, I'm really not sure, but I'm not sure how we could investigate this. It seems like a conflict (or very shaky behavior) between those two extensions when anything else is added in.
My only real recommend is to contact the developers of those extensions to see if they can determine why it doesn't work when Debug Mode and/or other extensions are enabled.
I hope that helps you narrow things down and get some results,
Melissa