可以自由停靠的窗体！

 self.onError=null;
 currentX = currentY = 0; 
 whichIt = null;  
         lastScrollX = 0; lastScrollY = 0;
 NS = (document.layers) ? 1 : 0;
 IE = (document.all) ? 1: 0;

 function hidenbox(o)
 {
  if(o.style.visibility == "hidden")
  {
   o.style.visibility = "visible";
  }
  else
  {
   o.style.visibility = "hidden";
  }
 }
 function hidenbox1(o,p)
        {
                o.style.visibility = "hidden";
                p.style.visibility = "hidden";
        }

 //tm=setInterval("timevisible();",2000);
 function timevisible()
 {
  if(document.all.tracqfloater.style.visibility != "visible")
  {
 //  document.all.tracqfloater.style.visibility == "visible";
  }
 }
 function heartBeat()
 {
  if(IE)
  {
   diffY = document.body.scrollTop; diffX = document.body.scrollLeft; }
     if(NS) { diffY = self.pageYOffset; diffX = self.pageXOffset; }
  if(diffY != lastScrollY)
   {
    percent = .1 * (diffY - lastScrollY);
             if(percent > 0) percent = Math.ceil(percent);
             else percent = Math.floor(percent);
    if(IE) document.all.tracqfloater.style.pixelTop += percent;
    if(NS) document.tracqfloater.top += percent;
    lastScrollY = lastScrollY + percent;
   }
  if(diffX != lastScrollX)
   {
    percent = .1 * (diffX - lastScrollX);
    if(percent > 0) percent = Math.ceil(percent);
    else percent = Math.floor(percent);
    if(IE) document.all.tracqfloater.style.pixelLeft += percent;
    if(NS) document.tracqfloater.left += percent;
    lastScrollX = lastScrollX + percent;
   } 
 } 
 function checkFocus(x,y)
 {
         stalkerx = document.tracqfloater.pageX;
         stalkery = document.tracqfloater.pageY;
         stalkerwidth = document.tracqfloater.clip.width;
         stalkerheight = document.tracqfloater.clip.height;
         if( (x > stalkerx && x < (stalkerx+stalkerwidth)) && (y > stalkery && y < (stalkery+stalkerheight)))
   return true;
         else
   return false;
 } 
 
 function grabIt(e)
 {
 if(IE) {
   
   whichIt = event.srcElement;
   while (whichIt.id.indexOf("tracqfloater") == -1)
    {
    whichIt = whichIt.parentElement;
    if (whichIt == null)
    {
     document.onmousemove = null;
     document.onmouseup = null;
     return true;
    }
    else
    {
     //whichIt.style.pixelLeft = whichIt.offsetLeft;
         //whichIt.style.pixelTop = whichIt.offsetTop;
     currentX = (event.clientX + document.body.scrollLeft);
        currentY = (event.clientY + document.body.scrollTop);
        document.onmousemove = moveIt;
     document.onmouseup = dropIt;
     
    }
    
      }
   
      
  }
 else
  {
          window.captureEvents(Event.MOUSEMOVE);
         if(checkFocus (e.pageX,e.pageY))
    {
                 whichIt = document.tracqfloater;
                 StalkerTouchedX = e.pageX-document.tracqfloater.pageX;
                 StalkerTouchedY = e.pageY-document.tracqfloater.pageY;
    }  
  }
     return true;
 }

 function moveIt(e)
  {
  if (whichIt == null)
   { return false; }
  if(IE)
  {
      newX = (event.clientX + document.body.scrollLeft);
      newY = (event.clientY + document.body.scrollTop);
      distanceX = (newX - currentX);
   distanceY = (newY - currentY);
   currentX = newX;    currentY = newY;
      whichIt.style.pixelLeft += distanceX;
   whichIt.style.pixelTop += distanceY;
   if(whichIt.style.pixelTop < document.body.scrollTop) whichIt.style.pixelTop = document.body.scrollTop;
   if(whichIt.style.pixelLeft < document.body.scrollLeft) whichIt.style.pixelLeft = document.body.scrollLeft;
   if(whichIt.style.pixelLeft > document.body.offsetWidth - document.body.scrollLeft - whichIt.style.pixelWidth - 20) whichIt.style.pixelLeft = document.body.offsetWidth - whichIt.style.pixelWidth - 20;
   if(whichIt.style.pixelTop > document.body.offsetHeight + document.body.scrollTop - whichIt.style.pixelHeight - 5) whichIt.style.pixelTop = document.body.offsetHeight + document.body.scrollTop - whichIt.style.pixelHeight - 5;
   event.returnValue = false;
  }
  else
  {
    whichIt.moveTo(e.pageX-StalkerTouchedX,e.pageY-StalkerTouchedY);
          if(whichIt.left < 0+self.pageXOffset) whichIt.left = 0+self.pageXOffset;
          if(whichIt.top < 0+self.pageYOffset) whichIt.top = 0+self.pageYOffset;
          if( (whichIt.left + whichIt.clip.width) >= (window.innerWidth+self.pageXOffset-17)) whichIt.left = ((window.innerWidth+self.pageXOffset)-whichIt.clip.width)-17;
          if( (whichIt.top + whichIt.clip.height) >= (window.innerHeight+self.pageYOffset-17)) whichIt.top = ((window.innerHeight+self.pageYOffset)-whichIt.clip.height)-17;
          return false;
  }
     return false;
 }

 function dropIt()
 {
  whichIt = null;
     if(NS) window.releaseEvents(Event.MOUSEMOVE);
     return true;
 }
 if(NS)
  {
   window.captureEvents(Event.MOUSEUP|Event.MOUSEDOWN);
   window.onmousedown = grabIt;
    window.onmousemove = moveIt;
   window.onmouseup = dropIt;
  }
 if(IE)
 {
  document.onmousedown = grabIt;
   //document.onmousemove = moveIt;
  //document.onmouseup = dropIt;
 }
 if(NS || IE) action = window.setInterval("heartBeat()",1);