Fix javascript error in IE8
Fix javascript error in IE8

the variable exists in the global namespace already and denotes a DOM element.
IE8 doesn't like to assign to that (while other JS engines probably just detach
the DOM element from the variable)

churchtools/churchtools_basic,churchtools/churchtools_basic,milux/churchtools_basic,milux/churchtools_basic,milux/churchtools_basic,milux/churchtools_basic,churchtools/churchtools_basic,churchtools/churchtools_basic