Added getSource support to the test page

Added getSource support to the test page
- For HTML, use "" around html attributes (https://google-styleguide.googlecode.com/svn/trunk/htmlcssguide.xml#HTML_Quotation_Marks)
- Can you fix the indentation elsewhere in the file? I think this file uses tabs and should use spaces (https://google-styleguide.googlecode.com/svn/trunk/htmlcssguide.xml#Indentation)