用js在table标签后面after了一个table，table2的tfoot标签不显示,代码如下：删除标签不显示，请问是什么原因
$("#" + "childrenEnd").after("<table id=" + idkey + " onclick='kk()' width='100%' border='1' cellpadding='0' cellspacing='0' bordercolor='#cccccc' class='ListTab'>"
+ "<tbody>"
+ " <tr>"
+ " <th rowspan='2'>" + items + "</th>"
+ "<td colspan='4' class='tl'><span class='Indent'><strong>" + matnr + "</strong>(" + maktx + ")</span></td>"
+ "</tr>"
+ "<tr>"
+ "<td class='em5'><span class='f666'>A</span><br /><span class='val'>" + menge + "</span>"
+ "</td>"
+ "<td class='em5'><span class='f666'>B</span><br /><span class='val' id='zgrmn" + idkey + "'>" + qmtxt + "</span>"
+ "</td>"
+ "<td class='em5'><span class='f666'>C</span><br /><span class='val' id='zlgpbe" + idkey + "'>" + zlgpbe + "</span> "
+ "</td>"
+ "<td><span class='f666'>D</span><br /><span class='val' id='bstme" + idkey + "'>" + bstme + "</span>"
+ "</td>"
+ "</tr>"
+ "</tbody>"
+ "<tfoot>"
+ "<tr>"
+ "<br>"
+ "<td colspan='5'> <span class='btn50 Bf494' style = 'width:200px' onclick='deleteSelectLine(\"" + matnr + "\")'>删除</span></td>"
+ "</tr>"
+ "</tfoot>"
+ "</table>");
