extern

http://www.cnblogs.com/luliang/archive/2008/08/21/1272746.html

 

http://blog.csdn.net/keensword/archive/2005/06/23/401114.aspx

 

http://www.cppblog.com/Macaulish/archive/2008/06/17/53689.html

 

http://blogold.chinaunix.net/u3/96097/showart_2048024.html

 

http://www.360doc.com/content/09/0823/18/43966_5183813.shtml

 

http://dev.yesky.com/72/3270072.shtml

 

http://kfc.skywalker.blog.163.com/blog/static/2774361720083199328194/

 

http://dev.firnow.com/course/3_program/vc/vc_js/20090827/172458.html