代码一
<HTML><HEAD>
<META content="MSHTML 6.00.2800.1586" name=GENERATOR></HEAD>
<BODY><INPUT onclick="sAlert('测试效果<br/>还可以直接书写HTML代码 <br/>© 2006');" type=button value=点击这里>
<SCRIPT language=javascript type=text/javascript>
//Author:Daviv
//Blog:<a href="<a href="" target="_blank">http</a>" target="_blank"><a href="" target="_blank">http://</a></a>
//Date:2006-10-28
function sAlert(str){
var msgw,msgh,bordercolor;
msgw=400;//提示窗口的宽度
msgh=100;//提示窗口的高度
bordercolor="#336699";//提示窗口的边框颜色
titlecolor="#99CCFF";//提示窗口的标题颜色
var sWidth,sHeight;
sWidth=document.body.offsetWidth;
sHeight=document.body.offsetHeight;
var bgObj=document.createElement("div");
bgObj.setAttribute('id','bgDiv');
bgObj.style.position="absolute";
bgObj.style.top="0";
bgObj.style.background="#777";
bgObj.style.filter="progid:DXImageTransform.Microsoft.Alpha(style=3,opacity=25,finishOpacity=75";
bgObj.style.opacity="0.6";
bgObj.style.left="0";
bgObj.style.width=sWidth + "px";
bgObj.style.height=sHeight + "px";
document.body.appendChild(bgObj);
var msgObj=document.createElement("div")
msgObj.setAttribute("id","msgDiv");
msgObj.setAttribute("align","center");
msgObj.style.position="absolute";
msgObj.style.background="white";
msgObj.style.font="12px/1.6em Verdana, Geneva, Arial, Helvetica, sans-serif";
msgObj.style.border="1px solid " + bordercolor;
msgObj.style.width=msgw + "px";
msgObj.style.height=msgh + "px";
msgObj.style.top=(document.documentElement.scrollTop + (sHeight-msgh)/2) + "px";
msgObj.style.left=(sWidth-msgw)/2 + "px";
var title=document.createElement("h4");
title.setAttribute("id","msgTitle");
title.setAttribute("align","right");
title.style.margin="0";
title.style.padding="3px";
title.style.background=bordercolor;
title.style.filter="progid:DXImageTransform.Microsoft.Alpha(startX=20, startY=20, finishX=100, finishY=100,style=1,opacity=75,finishOpacity=100);";
title.style.opacity="0.75";
title.style.border="1px solid " + bordercolor;
title.style.height="18px";
title.style.font="12px Verdana, Geneva, Arial, Helvetica, sans-serif";
title.style.color="white";
title.style.cursor="pointer";
title.innerHTML="关闭";
title.onclick=function(){
document.body.removeChild(bgObj);
document.getElementById("msgDiv").removeChild(title);
document.body.removeChild(msgObj);
}
document.body.appendChild(msgObj);
document.getElementById("msgDiv").appendChild(title);
var txt=document.createElement("p");
txt.style.margin="1em 0"
txt.setAttribute("id","msgTxt");
txt.innerHTML=str;
document.getElementById("msgDiv").appendChild(txt);
}
</SCRIPT>
</BODY></HTML>
代码二
<HTML><HEAD><TITLE>WWW.Seolm.Com 无为Tools</TITLE>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<META content="MSHTML 6.00.2800.1578" name=GENERATOR></HEAD>
<BODY><!-- Code Begin -->
<SCRIPT language=javascript>
// 隐藏被ID为objID的对象（层）遮挡的所有select
function HideOverSels(objID)
{
var sels = document.getElementsByTagName('select');
for (var i = 0; i < sels.length; i++)
if (Obj1OverObj2(document.all[objID], sels[i]))
sels[i].style.visibility = 'hidden';
else
sels[i].style.visibility = 'visible';
}
//判断obj1是否遮挡了obj2
function Obj1OverObj2(obj1, obj2)
{
var pos1 = getPosition(obj1)
var pos2 = getPosition(obj2)
var result = true;
var obj1Left = pos1.left - window.document.body.scrollLeft;
var obj1Top = pos1.top - window.document.body.scrollTop;
var obj1Right = obj1Left + obj1.offsetWidth;
var obj1Bottom = obj1Top + obj1.offsetHeight;
var obj2Left = pos2.left - window.document.body.scrollLeft;
var obj2Top = pos2.top - window.document.body.scrollTop;
var obj2Right = obj2Left + obj2.offsetWidth;
var obj2Bottom = obj2Top + obj2.offsetHeight;
if (obj1Right <= obj2Left || obj1Bottom <= obj2Top ||
obj1Left >= obj2Right || obj1Top >= obj2Bottom)
result = false;
return result;
}
// 获取对象的坐标
function getPosition(Obj)
{
for (var sumTop=0,sumLeft=0;Obj!=window.document.body;sumTop+=Obj.offsetTop,sumLeft+=Obj.offsetLeft, Obj=Obj.offsetParent);
return {left:sumLeft,top:sumTop}
}
</SCRIPT>
<SCRIPT language=JavaScript>
<!--
var currentMoveObj = null; //当前拖动对象
var relLeft; //鼠标按下位置相对对象位置
var relTop;
function f_mdown(obj)
{
currentMoveObj = obj; //当对象被按下时，记录该对象
currentMoveObj.style.position = "absolute";
relLeft = event.x - currentMoveObj.style.pixelLeft;
relTop = event.y - currentMoveObj.style.pixelTop;
}
window.document.onmouseup = function()
{
currentMoveObj = null; //当鼠标释放时同时释放拖动对象
}
function f_move(obj)
{
if(currentMoveObj != null)
{
currentMoveObj.style.pixelLeft=event.x-relLeft;
currentMoveObj.style.pixelTop=event.y-relTop;
}
}
//-->
</SCRIPT>
<SELECT name=""> <OPTION selected>test1</OPTION> <OPTION>test2</OPTION> <OPTION>test3</OPTION></SELECT>
<TABLE onmousemove="f_move(this);HideOverSels('t1')" onselectstart="return false" onmousedown=f_mdown(this) id=t1 style="LEFT: 50px; POSITION: absolute; TOP: 50px" width=200 border=1>
<TBODY>
<TR>
<TD style="CURSOR: move" align=middle bgColor=#cccccc>title1</TD></TR>
<TR>
<TD align=middle height=60>移到select上看看效果：）</TD></TR></TBODY></TABLE>
<TABLE onmousemove="f_move(this);HideOverSels('t2')" onselectstart="return false" onmousedown=f_mdown(this) id=t2 style="LEFT: 350px; POSITION: absolute; TOP: 250px" width=200 border=1>
<TBODY>
<TR>
<TD style="CURSOR: move" align=middle bgColor=#cccccc>title2</TD></TR>
<TR>
<TD align=middle height=60>content</TD></TR></TBODY></TABLE><!-- Code Over --></BODY></HTML>