create a drop down list of xml attribute value

[krackz]

this is my xml file:-\[code\]<child_2 entity_id="2" value="http://stackoverflow.com/questions/15738054/Root" parent_id="1"> <child_4 entity_id="4" value="http://stackoverflow.com/questions/15738054/Activities" parent_id="2"> <child_10066 entity_id="10066" value="http://stackoverflow.com/questions/15738054/Physical1" parent_id="4"> <child_10067 entity_id="10067" value="http://stackoverflow.com/questions/15738054/Cricket" parent_id="10066"> <child_10068 entity_id="10068" value="http://stackoverflow.com/questions/15738054/One Day" parent_id="10067"/> </child_10067> </child_10066> <child_10069 entity_id="10069" value="http://stackoverflow.com/questions/15738054/Test2" parent_id="4"/> <child_10070 entity_id="10070" value="http://stackoverflow.com/questions/15738054/Test3" parent_id="4"/> <child_10071 entity_id="10071" value="http://stackoverflow.com/questions/15738054/Test4" parent_id="4"/> <child_10072 entity_id="10072" value="http://stackoverflow.com/questions/15738054/Test5" parent_id="4"/> <child_5 entity_id="5" value="http://stackoverflow.com/questions/15738054/Physical" parent_id="4"/> </child_4></child_2>\[/code\]i want to drop-down list start with \[code\]child_4\[/code\] and there all child something like this type:-\[code\]<select> <option>Activities</option> <option>Physical1</option> <option>Cricket</option> <option>One DAy</option> <option>Test2</option> <option>Test3</option> <option>Test4</option> <option>Test5</option> <option>Physical</option></select>\[/code\]