浏览器验证 

function checkBrowser() 
{  
   this.ver=navigator.appVersion  
   this.dom=document.getElementById?1:0  
   this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom)?1:0;  
   this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0;  
   this.ie4=(document.all && !this.dom)?1:0;  
   this.ns5=(this.dom && parseInt(this.ver) >= 5) ?1:0;  
   this.ns4=(document.layers && !this.dom)?1:0;  
   this.mac=(this.ver.indexOf('Mac') > -1) ?1:0;  
   this.ope=(navigator.userAgent.indexOf('Opera')>-1);  
   this.ie=(this.ie6 || this.ie5 || this.ie4)  
   this.ns=(this.ns4 || this.ns5)  
   this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns5 || this.ns4 || this.mac || this.ope)  
   this.nbw=(!this.bw)  
   return this; 
}

计算内容宽和高 

   
function   test(obj)   
{   
    var   range   =   obj.createTextRange();   
     alert("内容区宽度:   "   +   range.boundingWidth     
     +  "pxrn内容区高度:   "   +   range.boundingHeight   +  "px");   

}   
   
   
sdf   

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 

 
 
    
    
    
 
 
<!-- 
  //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; 
   } 
} 
 
屏蔽鼠标右键、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格键 
 

移动的图层，拖动 


1.meizz 
 
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; 
   } 
} 
 
2. 
 
wlecome
 
 
 
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); 
} 

文档状态改变 


 
 
var doc=window.frames["f"].document; 
function s(){ 
if (doc.readyState=="complete"){ 
   document.all.f.style.height=doc.body.scrollHeight 
   document.all.f.style.width=doc.body.scrollWidth 
} 
} 
doc.onreadystatechange=s 

操作COOKIE 


function SetCookie(sName, sValue) 
{ 
document.cookie = sName + "=" + escape(sValue) + "; "; 
} 
function GetCookie(sName) 
{ 
var aCookie = document.cookie.split("; "); 
for (var i=0; i 

setTimeout增加参数 

 
var _st = window.setTimeout; 
window.setTimeout = function(fRef, mDelay) { 
if(typeof fRef == 'function'){ 
  var argu = Array.prototype.slice.call(arguments,2); 
  var f = (function(){ fRef.apply(null, argu); }); 
  return _st(f, mDelay); 
} 
return _st(fRef,mDelay); 
} 
function test(x){ 
alert(x); 
} 
window.setTimeout(test,1000,'fason'); 

自定义的apply,call 

Function.prototype.apply = function (obj, argu) { 
if (obj) obj.constructor.prototype._caller = this;  
var argus = new Array(); 
for (var i=0;i

下载文件 

function DownURL(strRemoteURL,strLocalURL) 
{ 
try 
{ 
  var xmlHTTP=new ActiveXObject("Microsoft.XMLHTTP"); 
   xmlHTTP.open("Get",strRemoteURL,false); 
   xmlHTTP.send(); 
  var adodbStream=new ActiveXObject("ADODB.Stream"); 
   adodbStream.Type=1;//1=adTypeBinary 
   adodbStream.Open(); 
   adodbStream.write(xmlHTTP.responseBody); 
   adodbStream.SaveToFile(strLocalURL,2); 
   adodbStream.Close(); 
   adodbStream=null; 
   xmlHTTP=null; 

} 
catch(e) 
{ 
   window.confirm("下载URL出错!"); 
} 
//window.confirm("下载完成."); 
}

检验连接是否有效 

function getXML(URL)  
{ 
var xmlhttp = new ActiveXObject("microsoft.xmlhttp"); 
xmlhttp.Open("GET",URL, false);  
try 
{  
   xmlhttp.Send(); 
} 
catch(e){} 
finally  
{ 
  var result = xmlhttp.responseText; 
  if(result)  
   { 
   if(xmlhttp.Status==200) 
    { 
    return(true); 
    } 
   else  
    { 
    return(false); 
    } 
   } 
  else  
   { 
   return(false); 
   } 
} 
}

(1)拖拽访问 
event.dataTransfer.setData("URL", oImage.src); 
sImageURL = event.dataTransfer.getData("URL") 
(2)普通访问 
window.clipboardData.setData("Text",oSource.innerText); 
window.clipboardData.getData("Text"); 

 
 
 
 
    .sHistory {behavior:url(#default#savehistory);}