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�键�弊
// description of your code here
function KeyDown(){
//å±?è”½é¼ æ ‡å?³é”®ã€?Ctrl+nã€?shift+F10ã€?F5刷新ã€?é€€æ ¼é”®
//alert("ASCII代ç ?是:"+event.keyCode);
if ((window.event.altKey)&&
((window.event.keyCode==37)|| //�蔽 Alt+ 方�键 �
(window.event.keyCode==39))){ //�蔽 Alt+ 方�键 →
alert("ä¸?å‡†ä½ ä½¿ç”¨ALT+æ–¹å?‘é”®å‰?进或å?Žé€€ç½‘页ï¼?");
event.returnValue=false;
}
if ((event.keyCode==8) || //å±?è”½é€€æ ¼åˆ é™¤é”®
(event.keyCode==116)|| //�蔽 F5 刷新键
(event.keyCode==112)|| //�蔽 F1 刷新键
(event.ctrlKey && event.keyCode==82)){ //Ctrl + R
event.keyCode=0;
event.returnValue=false;
}
if ((event.ctrlKey)&&(event.keyCode==78)) //�蔽 Ctrl+n
event.returnValue=false;
if ((event.shiftKey)&&(event.keyCode==121)) //�蔽 shift+F10
event.returnValue=false;
if (window.event.srcElement.tagName == "A" && window.event.shiftKey)
window.event.returnValue = false; //å±?蔽 shift åŠ é¼ æ ‡å·¦é”®æ–°å¼€ä¸€ç½‘é¡µ
if ((window.event.altKey)&&(window.event.keyCode==115)){ //�蔽Alt+F4
window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px");
return false;}
}





