这里有个很有意思的东西，！（原创：美洲豹）-IDC资讯中心

test.htm
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">

<html xmlns:v="urn:schemas-microsoft-com:vml">
<head>
    <title>公文留痕</title>
</head>
<style>
v\:* { behavior: url(#default#vml) }
</style>
<link rel="stylesheet" href="pub_document.css">
<script language="jscript">
var nowid=0;
var popid=0;
var padheight=0;
function init()
{
newid=parseint(document.all("n").value);
}
function createdelline(num)
{
var newmark=document.createelement("<div id=mark"+num+"></div>");
memo.insertbefore(newmark);
var orcts = otemprange.getclientrects();
for(var i=0;i<orcts.length;i++)
{
  var t=orcts[i].top;
  var l=orcts[i].left;
  var r=orcts[i].right;
  var b=orcts[i].bottom;
  var newrect=document.createelement("<v:roundrect oncontextmenu=popid="+num+";popup(); id=rect"+num+"no"+i+" style=position:absolute;visibility:hidden filled=t fillcolor=red strokecolor=red strokeweight=1pt></v:roundrect>");
  newmark.insertbefore(newrect);
  newrect.style.postop=t+document.body.scrolltop-2+(b-t)/2;
  newrect.style.posleft=l-2;
  newrect.style.width=r-l;
  newrect.style.height=2;
  newrect.style.visibility="";
}
}
function createrect(num)
{
var newmark=document.createelement("<div id=mark"+num+"></div>");
edit.insertbefore(newmark);
var orcts = otemprange.getclientrects();
for(var i=0;i<orcts.length;i++)
{
  var t=orcts[i].top;
  var l=orcts[i].left;
  var r=orcts[i].right;
  var b=orcts[i].bottom;
  var newrect=document.createelement("<v:roundrect oncontextmenu=popid="+num+";popup(); id=rect"+num+"no"+i+" style=position:absolute;visibility:hidden filled=f strokecolor=red strokeweight=1.5pt></v:roundrect>");
  newmark.insertbefore(newrect);
  newrect.style.postop=t+document.body.scrolltop-3;
  newrect.style.posleft=l-2;
  newrect.style.width=r-l;
  newrect.style.height=b-t;
  newrect.style.visibility="";
}
}
var popsrcelement=null;
var selectok=false;
var otemprange=null;
function createtemprange()
{
hidemenu();
doc_click();
if(document.selection.type=="text")
  {
   otemprange=document.selection.createrange();  //把选择的文本创建成 textrange 对象
   if(otemprange.htmltext!=""){                    //检查选择的是否为空字符
       rangeposleft=otemprange.boundingleft;
       rangepostop =otemprange.offsettop+document.body.scrolltop+otemprange.boundingheight;
       otemprange.execcommand("backcolor",true,"#99ccff");;
       otemprange.execcommand("unselect");
       selectok=true;
      }
      else
       selectok=false;
  }
}
function doc_click()
{
dragapproved=false;
if(self.event.srcelement.classname=="item")
    return;
if((self.event.button==1)&&(otemprange!=null))  //取消临时标记
    {
       otemprange.execcommand("backcolor",true,"#efefef");
       otemprange=null;
       selectok=false;
    }
}
function popup()
{
  popsrcelement=event.srcelement;                  //获得 popup 事件源
  self.event.returnvalue=false;
  setbutton();
  var newxx=event.x+document.body.scrollleft-3;
  var newyy=event.y+document.body.scrolltop-3;
  if((event.clienty+135)>document.body.clientheight) newyy=newyy-135;
  if((event.clientx+120)>document.body.clientwidth) newxx=newxx-120;
  popmenu.style.posleft=newxx;
  popmenu.style.postop=newyy;
  popmenu.style.display="";
}
function setbutton()
{
document.all.item1.disabled=true;
document.all.item2.disabled=true;
document.all.item3.disabled=true;
if(selectok==true)
     {
     document.all.item1.disabled=false;          //显示标记按钮
     document.all.item3.disabled=false;          //显示拷贝按钮
     }
if(popsrcelement.classname=="wen")
     {
     document.all.item2.disabled=false;          //显示取消标记按钮
     document.all.item3.disabled=false;          //显示拷贝按钮
     }
if(popid!=0)
     document.all.item2.disabled=false;          //显示取消标记按钮
}
function hidemenu()    //隐藏弹出菜单
{
    popmenu.style.display="none";
}

var popid=0;

</div>

    </td>
</tr>
</table>
<div id="memo"></div>
<div class="bbb" id="popmenu" style="background-color:white;height: 135px; left: 0px; position: absolute; top: 0px; display:none; width: 120px; z-index: 9">
    <button class="item" name="item1" onmouseover="setcolor(1)" onmouseout="clearcolor(1)" onclick="masktext();"> 标记选中的</button><br>
    <button class="item" name="item2" onmouseover="setcolor(2)" onmouseout="clearcolor(2)"  onclick="unmask();"> 取消标记  </button><br>
    <hr align=center size=2 width="95%">
    <button class="item" name="item3" onmouseover="setcolor(3)" onmouseout="clearcolor(3)" onclick="copyto();" > 复制      </button><br>
    <button class="item" name="item4" onmouseover="setcolor(4)" onmouseout="clearcolor(4)" onclick="save();"> 保存修改  </button><br>
    <button class="item" name="item5" onmouseover="setcolor(5)" onmouseout="clearcolor(5)" onclick="hidemenu();showhelp();"> 在线帮助  </button>
</div>
<form name="saveform">
<input type="hidden" name="n" value="0">   <!– 总共有多少留痕操作 –>
<input type="hidden" name="con">             <!– 文本内容(包含修改过的内容) –>
<input type="hidden" name="memory">         <!– 留痕的内容由多个<div>组成 –>
</form>
</body>
</html>

这里有个很有意思的东西，！（原创：美洲豹）

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