怎么写一个类似提示框的东西。

// Example:
// onMouseOver="toolTip('tool tip text here')";
// onMouseOut="toolTip()";
// -or-
// onMouseOver="toolTip('more good stuff', '#FFFF00', 'orange')";
// onMouseOut="toolTip()"; 
/*
MOVE this to the <body>:
<div id="toolTipLayer" style="position:absolute; visibility: hidden"></div>
<script language="JavaScript"><!--
initToolTips(); //--></script>
*/
var ns4 = document.layers;
var ns6 = document.getElementById && !document.all;
var ie4 = document.all;
offsetX = 0;
offsetY = 20;
var toolTipSTYLE="";
function initToolTips()
{
  if(ns4||ns6||ie4)
  {
    if(ns4) toolTipSTYLE = document.toolTipLayer;
    else if(ns6) toolTipSTYLE = document.getElementById("toolTipLayer").style;
    else if(ie4) toolTipSTYLE = document.all.toolTipLayer.style;
    if(ns4) document.captureEvents(Event.MOUSEMOVE);
    else
    {
      toolTipSTYLE.visibility = "visible";
      toolTipSTYLE.display = "none";
    }
    document.onmousemove = moveToMouseLoc;
  }
}
function toolTip(msg, fg, bg)
{
  if(toolTip.arguments.length < 1) // hide
  {
    if(ns4) toolTipSTYLE.visibility = "hidden";
    else toolTipSTYLE.display = "none";
  }
  else // show
  {
    if(!fg) fg = "#777777";
    if(!bg) bg = "#FFFFFF";
    var content =
    '<table border="0" cellspacing="0" cellpadding="1" bgcolor="' + fg + '"><td>' +
    '<table border="0" cellspacing="0" cellpadding="1" bgcolor="' + bg + 
    '"><td align="center"><font face="sans-serif" color="' + fg +
    '" size="-2">&nbsp\;' + msg +
    '&nbsp\;</font></td></table></td></table>';
    if(ns4)
    {
      toolTipSTYLE.document.write(content);
      toolTipSTYLE.document.close();
      toolTipSTYLE.visibility = "visible";
    }
    if(ns6)
    {
      document.getElementById("toolTipLayer").innerHTML = content;
      toolTipSTYLE.display='block'
    }
    if(ie4)
    {
      document.all("toolTipLayer").innerHTML=content;
      toolTipSTYLE.display='block'
    }
  }
}
function moveToMouseLoc(e)
{
  if(ns4||ns6)
  {
    x = e.pageX;
    y = e.pageY;
  }
  else
  {
    x = event.x + document.body.scrollLeft;
    y = event.y + document.body.scrollTop;
  }
  toolTipSTYLE.left = x + offsetX;
  toolTipSTYLE.top = y + offsetY;
  return true;
}

解决方案 »

  1.   

    <span title="这里填上你需要提示给用户的信息">文字</a>
      

  2.   

    test.htm<script src="poptext.js"></script>
    <table>
    <tr><td  title="灰豆宝宝.net">wanghr100</td></tr>
    <tr><td  title="灰豆大仙.net">wanghr100</td></tr>
    </table>poptext.js//***********默认设置定义.*********************
    tPopWait=50;//停留tWait豪秒后显示提示。
    tPopShow=5000;//显示tShow豪秒后关闭提示
    showPopStep=20;
    popOpacity=70;//***************内部变量定义*****************
    sPop=null;
    curShow=null;
    tFadeOut=null;
    tFadeIn=null;
    tFadeWaiting=null;document.write("<style type='text/css'id='defaultPopStyle'>");
    document.write(".cPopText {  background-color: #F8F8F5;color:#000000; border: 1px #000000 solid;font-color: font-size: 12px; padding-right: 4px; padding-left: 4px; height: 20px; padding-top: 2px; padding-bottom: 2px; filter: Alpha(Opacity=0)}");
    document.write("</style>");
    document.write("<div id='dypopLayer' style='position:absolute;z-index:1000;' class='cPopText'></div>");
    function showPopupText(){
    var o=event.srcElement;
    MouseX=event.x;
    MouseY=event.y;
    if(o.alt!=null && o.alt!=""){o.dypop=o.alt;o.alt=""};
            if(o.title!=null && o.title!=""){o.dypop=o.title;o.title=""};
    if(o.dypop!=sPop) {
    sPop=o.dypop;
    clearTimeout(curShow);
    clearTimeout(tFadeOut);
    clearTimeout(tFadeIn);
    clearTimeout(tFadeWaiting);
    if(sPop==null || sPop=="") {
    dypopLayer.innerHTML="";
    dypopLayer.style.filter="Alpha()";
    dypopLayer.filters.Alpha.opacity=0;
    }
    else {
    if(o.dyclass!=null) popStyle=o.dyclass 
    else popStyle="cPopText";
    curShow=setTimeout("showIt()",tPopWait);
    }

    }
    }function showIt(){
    dypopLayer.className=popStyle;
    dypopLayer.innerHTML=sPop;
    popWidth=dypopLayer.clientWidth;
    popHeight=dypopLayer.clientHeight;
    if(MouseX+12+popWidth>document.body.clientWidth) popLeftAdjust=-popWidth-24
    else popLeftAdjust=0;
    if(MouseY+12+popHeight>document.body.clientHeight) popTopAdjust=-popHeight-24
    else popTopAdjust=0;
    dypopLayer.style.left=MouseX+12+document.body.scrollLeft+popLeftAdjust;
    dypopLayer.style.top=MouseY+12+document.body.scrollTop+popTopAdjust;
    dypopLayer.style.filter="Alpha(Opacity=0)";
    fadeOut();
    }function fadeOut(){
    if(dypopLayer.filters.Alpha.opacity<popOpacity) {
    dypopLayer.filters.Alpha.opacity+=showPopStep;
    tFadeOut=setTimeout("fadeOut()",1);
    }
    else {
    dypopLayer.filters.Alpha.opacity=popOpacity;
    tFadeWaiting=setTimeout("fadeIn()",tPopShow);
    }
    }function fadeIn(){
    if(dypopLayer.filters.Alpha.opacity>0) {
    dypopLayer.filters.Alpha.opacity-=1;
    tFadeIn=setTimeout("fadeIn()",1);
    }
    }
    document.onmouseover=showPopupText;