| //无模式的提示框 
function modelessAlert(Msg) {
 window.showModelessDialog(javascript:alert(\+escape(Msg)+\);window.close();,,status:no;resizable:no;help:no;dialogHeight:height:30px;dialogHeight:40px;);
 }
      //屏蔽按键   <html> <head>
 <meta http-equiv=Content-Type content=text/html; charset=gb2312>
 <noscript><meta http-equiv=refresh content=0;url=about:noscript></noscript>
 <title>屏蔽鼠标右键、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格键</title>
 </head>
 <body>
 <script language=javascript><!--
 //屏蔽鼠标右键、Ctrl+N、Shift+F10、F11、F5刷新、退格键
 //Author: meizz(梅花雨) 2002-6-18
 function document.oncontextmenu(){event.returnValue=false;}//屏蔽鼠标右键
 function window.onhelp(){return false} //屏蔽F1帮助
 function document.onkeydown()
 {
 if ((window.event.altKey)&&
 ((window.event.keyCode==37)||   //屏蔽 Alt+ 方向键 ←
 (window.event.keyCode==39)))   //屏蔽 Alt+ 方向键 →
 {
 alert(不准你使用ALT+方向键前进或后退网页!);
 event.returnValue=false;
 }
 /* 注:这还不是真正地屏蔽 Alt+ 方向键,
 因为 Alt+ 方向键弹出警告框时,按住 Alt 键不放,
 用鼠标点掉警告框,这种屏蔽方法就失效了。以后若
 有哪位高手有真正屏蔽 Alt 键的方法,请告知。*/
 if ((event.keyCode==8)  ||                 //屏蔽退格删除键
 (event.keyCode==116)||                 //屏蔽 F5 刷新键
 (event.ctrlKey && event.keyCode==82)){ //Ctrl + R
 event.keyCode=0;
 event.returnValue=false;
 }
 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
 if (window.event.srcElement.tagName == A && window.event.shiftKey)
 window.event.returnValue = false;             //屏蔽 shift 加鼠标左键新开一网页
 if ((window.event.altKey)&&(window.event.keyCode==115))             //屏蔽Alt+F4
 {
 window.showModelessDialog(about:blank,,dialogWidth:1px;dialogheight:1px);
 return false;
 }
 }
 </script>
 屏蔽鼠标右键、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格键
 </body>
 </html>
 //屏蔽打印 <style>
 @media print{
 * {display:none}
 }
 </style>
 //移动的图层,拖动 
 1.<span style='position:absolute;width:200;height:200;background:red' onmousedown=MouseDown(this) onmousemove=MouseMove() onmouseup=MouseUp()>meizz</span> <script language=javascript>
 var Obj;
 function MouseDown(obj)
 {
 Obj=obj;
 Obj.setCapture();
 Obj.l=event.x-Obj.style.pixelLeft;
 Obj.t=event.y-Obj.style.pixelTop;
 }
 function MouseMove()
 {
 if(Obj!=null)
 {
 Obj.style.left = event.x-Obj.l;
 Obj.style.top = event.y-Obj.t;
 }
 }
 function MouseUp()
 {
 if(Obj!=null)
 {
 Obj.releaseCapture();
 Obj=null;
 }
 }
 </script>
 2.
 <div id=myDiv src=logo.gif ondrag=doDrag(); onmouseover=this.style.cursor='hand' style=position:absolute;left=100;top=100; onmousedown=doMouseDown();>
 <a href=# onclick=return false><h1>wlecome</h1></a>
 </div>
 <script language=javascript type=text/javascript>
 var orgMouseX;
 var orgMouseY;
 var orgObjX;
 var orgObjY;
 function doDrag()
 {
 var myObject=document.all.myDiv;
 
 var x=event.clientX;
 var y=event.clientY;
 myObject.style.left=x-(orgMouseX-orgObjX);
 myObject.style.top=y-(orgMouseY-orgObjY);
 
 }
 function doMouseDown()
 {
 orgMouseX=event.clientX;
 orgMouseY=event.clientY;
 orgObjX=parseInt(document.all.myDiv.style.left);
 orgObjY=parseInt(document.all.myDiv.style.top);
 }
 
 </script>
 
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