Javascriptでのiframe操作tips(iframeの中身を差し替える) ref: http://qiita.com/nntsugu/items/640762a7ba8fd7cc50dd

file0.js

document.getElementById('iframe_id')[0].contentDocument.location.replace('target_url or target_path');

↓

document.getElementById('iframe_id').contentWindow.location.replace('target_url or target_path');

file0.txt

document.getElementById('iframe_id')[0].contentDocument.location.replace('target_url or target_path');

↓

document.getElementById('iframe_id').contentWindow.location.replace('target_url or target_path');

file1.js

$('#iframe_id')[0].contentDocument.location.reload(true);

file2.js

document.getElementById('iframe_id')[0].contentDocument.location.reload(true);

file3.js

$('#iframe_id')[0].contentDocument.location.replace('target_url or target_path');

file4.js

document.getElementById('iframe_id')[0].contentDocument.location.replace('target_url or target_path');

file5.js

$('#iframe_id')[0].contentDocument.location.replace('/preview/show/20140320');