Last evening after posting I spent hours culling through tech forums and read what I felt to be endless articles on DOM and window onload and javascript. While searching and comparing to the code on my site, I realized the problem most likely existed with one of two plugins that I was using. I simply deactivated the plugins and found the error stopped. Then I narrowed it down to the call for the external javascript that was being used for the ShareThis plugin. I ended up replacing the ShareThis plugin with Bookmarkify and this morning everything is working as it should.
