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//下面代碼實現全屏顯示
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//屏蔽鼠標右鍵、Ctrl+N、Shift+F10、F11、F5刷新、退格鍵
//Author: meizz(梅花雨) 2002-6-18
function document.oncontextmenu(){event.returnValue=false;}//屏蔽鼠標右鍵
function window.onhelp(){return false} //屏蔽F1幫助
function document.onkeydown()
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if ((window.event.altKey)&&
((window.event.keyCode==37)|| //屏蔽 Alt+ 方向鍵 ←
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/* 注：這還不是真正地屏蔽 Alt+ 方向鍵，
因爲 Alt+ 方向鍵彈出警告框時，按住 Alt 鍵不放，
用鼠標點掉警告框，這種屏蔽方法就失效了。以後若
有哪位高手有真正屏蔽 Alt 鍵的方法，請告知。*/
if ((event.keyCode==8) || //屏蔽退格刪除鍵
(event.keyCode==116)|| //屏蔽 F5 刷新鍵
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event.keyCode=0;
event.returnValue=false;
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if (event.keyCode==122){event.keyCode=0;event.returnValue=false;} //屏蔽F11
if (event.ctrlKey && event.keyCode==78) event.returnValue=false; //屏蔽 Ctrl+n
if (event.shiftKey && event.keyCode==121)event.returnValue=false; //屏蔽 shift+F10
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window.showModelessDialog("about:blank","","dialogWidth:0px;dialogheight:0px"); //將關閉時間給了這個dialog
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<p>屏蔽鼠標右鍵、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格鍵，但是無法禁止工具欄按鈕的刷新</p>
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