<div class="codetitle"> <span><a style="CURSOR: pointer" data="70994" class="copybut" id="copybut70994" onclick="doCopy('code70994')"><u>复制代码</u></a></span> 代码如下:</div> <div class="codebody" id="code70994"> <br><script language="Javascript" type="text/javascript"> <BR>//屏蔽鼠标右键、Ctrl+N、Shift+F10、F11、F5刷新、退格键 <BR>function document.oncontextmenu() { <BR>event.returnValue = false; <BR>} //屏蔽鼠标右键 <BR>function window.onhelp() { <BR>return false <BR>} //屏蔽F1帮助 <BR>function document.onkeydown() { <BR>if ((window.event.altKey) && ((window.event.keyCode == 37) || //屏蔽 Alt+ 方向键 ← <BR>(window.event.keyCode == 39))) //屏蔽 Alt+ 方向键 → <BR>{ <BR>alert("不准你使用ALT+方向键前进或后退网页！"); <BR>event.returnValue = false; <BR>} <BR>/* 注：这还不是真正地屏蔽 Alt+ 方向键， <BR>因为 Alt+ 方向键弹出警告框时，按住 Alt 键不放， <BR>用鼠标点掉警告框，这种屏蔽方法就失效了。以后若 <BR>有哪位高手有真正屏蔽 Alt 键的方法，请告知。*/ <br><br>if ((event.keyCode == 8) || //屏蔽退格删除键 <BR>(event.keyCode == 116) || //屏蔽 F5 刷新键 <BR>(event.ctrlKey && event.keyCode == 82)) { //Ctrl + R <BR>event.keyCode = 0; <BR>event.returnValue = false; <BR>} <BR>if (event.keyCode == 122) { <BR>event.keyCode = 0; <BR>event.returnValue = false; <BR>} <BR>//屏蔽F11 <BR>if (event.ctrlKey && event.keyCode == 78) event.returnValue = false; <BR>//屏蔽 Ctrl+n <BR>if (event.shiftKey && event.keyCode == 121) event.returnValue = false; <BR>//屏蔽 shift+F10 <BR>if (window.event.srcElement.tagName == "A" && window.event.shiftKey) <BR>window.event.returnValue = false; //屏蔽 shift 加鼠标左键新开一网页 <BR>if ((window.event.altKey) && (window.event.keyCode == 115)) //屏蔽Alt+F4 <BR>{ <BR>window.showModelessDialog("about:blank", "", "dialogWidth:1px;dialogheight:1px"); <BR>return false; <BR>} <BR>} <BR></script> <br> </div>
