屏蔽IE浏览器中的功能键
<script>document.onhelp = function(){window.event.returnValue=false;}document.onkeydown=noway; //绑定窗体加载事件function noway(){if(window.event.keyCode == 113) { alert("dddd");} if(window.event.keyCode == 114) { window.event.keyCode = 505; } if(window.event.keyCode == 115) { window.event.keyCode = 505; } if(window.event.keyCode == 116) { window.event.keyCode = 505; } if(window.event.keyCode == 117) { window.event.keyCode = 505; } if(window.event.keyCode == 118) { window.event.keyCode = 505; } if(window.event.keyCode == 119) { window.event.keyCode = 505; } if(window.event.keyCode == 120) { window.event.keyCode = 505; } if(window.event.keyCode == 121) { window.event.keyCode = 505; } if(window.event.keyCode == 122) { window.event.keyCode = 505; } if(window.event.keyCode == 123) { window.event.keyCode = 505; } if(window.event.keyCode == 13) { window.event.keyCode = 505; } if(window.event.keyCode == 8) { window.event.returnValue=false; } if(window.event.keyCode == 505){ window.event.returnValue=false; } }</script>?