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var article_id = "46481";
var chapter_id = "22813765";
function jumppage {
var event = document.all ? window.event : arguments[0];
if 〔event.keycode == 37〕 document.location = preview_page;
if 〔event.keycode == 39〕 document.location = next_page;
if 〔event.keycode == 13〕 document.location = index_page;
}
document.onkeydown=jumppage;
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