请问下面的脚本能实现什么功能啊？
<STRONG><U><script language="javascript"><BR>function qqping_url_build()<BR>{<BR> p=window.top.document.URL.indexOf("?");<BR> if(-1==p)p=window.top.document.URL.indexOf("&");<BR> if(-1==p)address="u="+window.top.document.URL;<BR> else address="u="+window.top.document.URL.substring(0,p);<BR> p=document.referrer.indexOf("?");<BR> if(-1==p)p=window.top.document.referrer.indexOf("&");<BR> if(-1==p)refer="r="+window.top.document.referrer;<BR> else refer="r="+window.top.document.referrer.substring(0,p);<BR> return address+"&"+refer;<BR>}<BR>document.write("<div style='position:absolute; left:0px; top:0px; width:0px; height:0px; z-index:0; visibility: hidden;'><img src='http://ping.qq.com/ping?" + qqping_url_build() + "' height='0' width='0'></div>");<BR></script></U></STRONG>re:请问下面的脚本能实现什么功能啊？
哇，好好笑
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