Mission: to find sibling rows with a partial match on ID.

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var rowID; var targets; $("a.expand").toggle(function(){ rowID = $(this).parents("tr.data").attr("id"); targets = $(this).parents("tr.data").siblings("tr.detail[id*=" + rowID + "]"); targets.removeClass("hidden"); },function(){ rowID = $(this).parents("tr.data").attr("id"); targets = $(this).parents("tr.data").siblings("tr.detail[id*=" + rowID + "]"); targets.addClass("hidden"); });