父窗体a.jsp
function showFlowLog(url){
   var featrues = "dialogHeight:350px; dialogWidth:580px; center: yes; status=no";
   window.showModalDialog( url, self, featrues );
}<a href="javascript:showFlowLog('b.jsp?ftName=中文')">编辑</a>子窗体如何取到 ftName父窗体用 hidden也行