当元素的兄弟元素出现时，显示元素的属性值

<a id='a1' name='a1'/>
<b text='b1'/>
<d test='test0' location='L0' text='c0'/>
<a id='a2' name='a2'/>
<b text='b2'/>
<c test='test1' location='L1' text='c1'/>
<c test='test2' location='L2' text='c2'/>
<a id='a3' name='a3'>
<b text='b3'/>
<c test='test3' location='L3' text='c3'/>
<c test='test4' location='L4' text='c4'/>
<c test='test5' location='L5' text='c5'/>
<a id='a1' name='a1'/>
<b text='b1'/>
<d test='