old_contents: 
  	SwiftCalcs.Worksheet = Worksheet;
  	var elements = SwiftCalcs.elements = {
  		'math': math,
  		'text': text,
  		'if': if_block,
  		'else': else_block,
  		'elseif': else_if_block,
  		'for': for_loop,
  		'continue': continue_block,
  		'break': break_block,
  		'plot': plot,
  		'plot_func': plot_func,
  		'plot_line': plot_line,
  		'plot_line_stacked': plot_line_stacked,
  		'plot_area': plot_area,
  		'plot_area_stacked': plot_area_stacked,
  		'plot_scatter': plot_scatter,
  		'plot_bar_stacked': plot_bar_stacked,
  		'plot_bar': plot_bar,
  		'plot_histogram': plot_histogram,
  		'bookmark': bookmark,
  		'solve': solve,
  		'signin_block': signIn,
  		'desolve': desolve,
  		'regression': regression,
  		'import': importData,
  		'image': image,
  		'imageBlock': imageBlock,
  		'csv': csv,
  		'csvBlock': csvBlock,
  		'video': video,
  		'videoBlock': videoBlock,
  	}
  	for(var i = 0; i < giac_elements_to_add.length; i++) 
  		elements[giac_elements_to_add[i].key] = SwiftCalcs.elements[giac_elements_to_add[i].key] = giac_elements_to_add[i].el;
  }());
  window.SwiftCalcs_js_ready = true;
  console.log('SWIFT: ' + window.SwiftCalcs_js_ready);
new_contents: 
  	SwiftCalcs.Worksheet = Worksheet;
  	var elements = SwiftCalcs.elements = {
  		'math': math,
  		'text': text,
  		'if': if_block,
  		'else': else_block,
  		'elseif': else_if_block,
  		'for': for_loop,
  		'continue': continue_block,
  		'break': break_block,
  		'plot': plot,
  		'plot_func': plot_func,
  		'plot_line': plot_line,
  		'plot_line_stacked': plot_line_stacked,
  		'plot_area': plot_area,
  		'plot_area_stacked': plot_area_stacked,
  		'plot_scatter': plot_scatter,
  		'plot_bar_stacked': plot_bar_stacked,
  		'plot_bar': plot_bar,
  		'plot_histogram': plot_histogram,
  		'bookmark': bookmark,
  		'solve': solve,
  		'signin_block': signIn,
  		'desolve': desolve,
  		'regression': regression,
  		'import': importData,
  		'image': image,
  		'imageBlock': imageBlock,
  		'csv': csv,
  		'csvBlock': csvBlock,
  		'video': video,
  		'videoBlock': videoBlock,
  	}
  	for(var i = 0; i < giac_elements_to_add.length; i++) 
  		elements[giac_elements_to_add[i].key] = SwiftCalcs.elements[giac_elements_to_add[i].key] = giac_elements_to_add[i].el;
  }());
  window.SwiftCalcs_js_ready = true;
subject: Remove IE debug line