网页防止复制、防止下载、防止右键的js

标签的设置:
  
 
 防止复制的js:
 
 function disableselect(e){
 return false}
 function reEnable(){return true
 }
 file://if IE4+
 document.onselectstart=new Function ("return false")
 file://if NS6
 if (window.sidebar){
 document.οnmοusedοwn=disableselect
 document.οnclick=reEnable
 }