请教一个鼠标划过样式问题

我用了一个Frameset,就是top,left,main那种结构的.
在页面上按快捷键后left的宽度设置为0了,将其隐藏起来.
现在我想做成按快捷键后left宽度设置为5,留个边，鼠标划过的时候会弹出left,鼠标移开left又收回去.类似VS里那个解决方案资源管理器或者QQ那样的.
现在我把onmouseover事件加在了left框架上,出现俩问题
1.onmouseover事件执行了三次
2.我的left页中有一个TABLE,里面有TR和TD,貌似当鼠标划过left框架执行了一次mouseover,当进入Table时触发了left的onmouseout,这个该如何处理呢?
代码如下:window.top.frames["index_left"].document.attachEvent("onmouseover",function(){alert("mouseover");});
window.top.frames["index_left"].document.attachEvent("onmouseout",function(){alert("mouseout");});请高人指点下

解决方案 »

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代码作用区域不对。
给你例子：
例1：<style>
  
  </style>
  <script>
  function   showandshade()
  {
  if(span1.innerText==3)
  {
  span1.innerText=4
  document.all("td1").style.display="none"
  }
  else
  {
  span1.innerText=3
  document.all("td1").style.display=""
  }
  }
  </script>
  <body   leftMargin="0"   topMargin="0"   scroll=no>
  <table   width="100%"   height="100%"   border=0   cellSpacing="0"   cellPadding="0">
  <tr   height="100%">
  <td   id="td1"   width="50"   height="100%"   style="display:none"><iframe   src=left.htm   frameborder=0   scrolling=no   width="70"></iframe></td>
  <td   bgColor=#a4b6d7   onmouseover="showandshade()"   style="font-size:7pt;width:5pt;cursor:default;color=:#ffffff"><span   id="span1"   class="ptr">4</span><font   size="1px"   color=green><br>点<br>击<br>展<br>开</font> </td>
  <td><iframe   name="main"   src=right.htm   frameborder=0   scrolling=yes   height="100%"   width="100%"></frame></td>
  </tr>
  </table>
  </body>
  <SCRIPT>
  if(window.screen.width<'1024'){showandshade()}
  </SCRIPT>   里面的onmouseover可以修改为onclick
例2：<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<style>

</style>
</head><body><script language="JavaScript">function MM_displayStatusMsg(msgStr) {
status=msgStr;
document.MM_returnValue = true;
}function highlight(x){
document.forms[x].elements[0].focus()
document.forms[x].elements[0].select()
}function MM_jumpMenu(targ,selObj,restore){
eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
if (restore) selObj.selectedIndex=0;
}var NS
IE=document.all;
NS=document.layers;
hdrFontFamily="Verdana";
hdrFontSize="2";
hdrFontColor="white";
hdrBGColor="#666666";
linkFontFamily="Verdana";
linkFontSize="2";
linkBGColor="white";
linkOverBGColor="#CCCCCC";
linkTarget="_top";
YOffset=60;
staticYOffset=20;
menuBGColor="black";
menuIsStatic="no";
menuHeader="公共事务"
menuWidth=80; // Must be a multiple of 5!
staticMode="advanced"
barBGColor="#1298fd";
barFontFamily="Verdana";
barFontSize="2";
barFontColor="white";
barText="论坛导航条";function moveOut() {
if (window.cancel) {
cancel="";
}if (window.moving2) {
clearTimeout(moving2);
moving2="";
}
if ((IE && ssm2.style.pixelLeft<0)||(NS && document.ssm2.left<0)) {
if (IE) {ssm2.style.pixelLeft += (5%menuWidth);
}
if (NS) {
document.ssm2.left += (5%menuWidth);
}moving1 = setTimeout('moveOut()', 5)
}
else {
clearTimeout(moving1)
}
};function moveBack() {
cancel = moveBack1()
}
function moveBack1() {
if (window.moving1) {
  clearTimeout(moving1)
}if ((IE && ssm2.style.pixelLeft>(-menuWidth))||(NS && document.ssm2.left>(-150))) {
if (IE) {ssm2.style.pixelLeft -= (5%menuWidth);
}
if (NS) {
document.ssm2.left -= (5%menuWidth);
}
moving2 = setTimeout('moveBack1()', 5)}
else {
  clearTimeout(moving2)
}
};lastY = 0;
function makeStatic(mode) {
if (IE) {winY = document.body.scrollTop;var NM=ssm2.style
}
if (NS) {winY = window.pageYOffset;var NM=document.ssm2
}
if (mode=="smooth") {
if ((IE||NS) && winY!=lastY) {
  smooth = .2 * (winY - lastY);
    if(smooth > 0) smooth = Math.ceil(smooth);
  else smooth = Math.floor(smooth);
    if (IE) NM.pixelTop+=smooth;
    if (NS) NM.top+=smooth;
    lastY = lastY+smooth;
}
setTimeout('makeStatic("smooth")', 1)
}else if (mode=="advanced") {
if ((IE||NS) && winY>YOffset-staticYOffset) {
  if (IE) {NM.pixelTop=winY+staticYOffset
}
if (NS) {NM.top=winY+staticYOffset
}
}
else {
if (IE) {NM.pixelTop=YOffset
}
if (NS) {NM.top=YOffset-7
}
}
setTimeout('makeStatic("advanced")', 1)
}
}function init() {
if (IE) {
ssm2.style.pixelLeft = -menuWidth;
ssm2.style.visibility = "visible"
}
else if (NS) {
document.ssm2.left = -menuWidth;
document.ssm2.visibility = "show"
}
else {
alert('Choose either the "smooth" or "advanced" static modes!')
}
}
function MM_displayStatusMsg(msgStr) {
status=msgStr;
document.MM_returnValue = true;
}
</script><script language="JavaScript">
if (IE) {document.write('<DIV ID="ssm2" style="visibility:hidden;Position : Absolute ;Left : 0px ;Top : '+YOffset+'px ;Z-Index : 20;width:1px" onmouseover="moveOut()" onmouseout="moveBack()">')}
if (NS) {document.write('<LAYER visibility="hide" top="'+YOffset+'" name="ssm2" bgcolor="'+menuBGColor+'" left="0" onmouseover="moveOut()" onmouseout="moveBack()">')}
tempBar=""
for (i=0;i<barText.length;i++) {
tempBar+=barText.substring(i, i+1)+"<BR>"}
document.write('<table border="0" cellpadding="0" cellspacing="1" width="'+(menuWidth+16+2)+'" bgcolor="'+menuBGColor+'"><tr><td bgcolor="'+hdrBGColor+'" WIDTH="'+menuWidth+'"> <font face="'+hdrFontFamily+'" Size="'+hdrFontSize+'" COLOR="'+hdrFontColor+'"><b>'+menuHeader+'</b></font></td><td align="center" rowspan="100" width="16" bgcolor="'+barBGColor+'"><p align="center"><font face="'+barFontFamily+'" Size="'+barFontSize+'" COLOR="'+barFontColor+'"><B>'+tempBar+'</B></font></p></TD></tr>')
function addItem(text, link, target) {
if (!target) {target=linkTarget}
document.write('<TR><TD BGCOLOR="'+linkBGColor+'" onmouseover="bgColor=\''+linkOverBGColor+'\'" onmouseout="bgColor=\''+linkBGColor+'\'"><ILAYER><LAYER onmouseover="bgColor=\''+linkOverBGColor+'\'" onmouseout="bgColor=\''+linkBGColor+'\'" WIDTH="100%"><FONT face="'+linkFontFamily+'" Size="'+linkFontSize+'"> <A HREF="'+link+'" target="'+target+'" CLASS="ssm2Items">'+text+'</A></FONT></LAYER></ILAYER></TD></TR>')}
function addHdr(text) {
document.write('<tr><td bgcolor="'+hdrBGColor+'" WIDTH="140"> <font face="'+hdrFontFamily+'" Size="'+hdrFontSize+'" COLOR="'+hdrFontColor+'"><b>'+text+'</b></font></td></tr>')}//Only edit the script between HEREaddItem('   论坛测试', 'thread.php?fid=12', '_blank');
addItem('   备份', 'thread.php?fid=11', '_blank');
addHdr('测试版');
addItem('   测试1', 'thread.php?fid=16', '_blank');
addItem('   测试2', 'thread.php?fid=17', '_blank');
addItem('   测试3', 'thread.php?fid=18', '_blank');
addItem('   测试4', 'thread.php?fid=19', '_blank');// and HERE! No more!document.write('<tr><td bgcolor="'+hdrBGColor+'"><font size="0" face="Arial"> </font></td></TR></table>')
if (IE) {document.write('</DIV>')}
if (NS) {document.write('</LAYER>')}
if ((IE||NS) && (menuIsStatic=="yes"&&staticMode)) {makeStatic(staticMode);}</script>
<script>
window.onload=init
</script></body>
</html></style>
</head>
<div id="demo" style="background:#E9FDF1;border:1px solid #7CCC99;" onmousemove="leftmouseover()" onmouseout="leftmouseout()">
<p>无标题文档</p>
</div>
<div id="rs" style="background:#E9FDF1;border:1px solid #7CCC99;"></div>
<script type="text/javascript">

</script>楼主看这个代码就能明白了，其实mouse一直都在触发，所以需要要判定是不是已经出发，如果没有触发再触发
<div id="demo" style="background:#E9FDF1;border:1px solid #7CCC99;" onmousemove="leftmouseover()" onmouseout="leftmouseout()">
<p>无标题文档</p>
</div>
<div id="rs" style="background:#E9FDF1;border:1px solid #7CCC99;"></div>
<script type="text/javascript">

</script>
再看这个