js禁止页面刷新后退(2)

      var    list    =    s.split("&");           
for    (var    i=0;    i    <    list.length;    i++){           
var    pair    =    list[i].split("=");           
if    (pair[0]    &&    pair[0]    !=""){           
Request[unescape(pair[0])]    =    unescape(pair[1]);           
}           
}           
       }           
            
      var    fullscreen=Request["fullscreen"];           
      if(fullscreen!="yes"){           
      var    file    =self.location;           
      var    a    =    window.open("about:blank","","fullscreen=yes")           
       self.opener=null           
       self.close()           
       a.location=file    +   "?fullscreen=yes";           
       }           
}           
</script>       
<script language="Javascript"><!--        
//屏蔽鼠标右键、Ctrl+N、Shift+F10、F11、F5刷新、退格键        
//Author: meizz(梅花雨) 2002-6-18        
function document.oncontextmenu(){event.returnValue=false;}//屏蔽鼠标右键