如何使用dom解析没有getattribute的xml属性值

I may be missing something very obvious in the docs, I am trying to make a more generic parsing routine that doesn't need to know the xml tag names and attribute names only that there are a certain number of levels and certain number of attributes. I am trying to parse xml similar to the example below to get the values of these attributes into variables with out using there names:I may be missing something very obvious in the