<SCRIPT LANGUAGE="JavaScript"> 
var  s = ""; 
s += " 网页可见区域宽："+ document.body.clientWidth; 
s += " 网页可见区域高："+ document.body.clientHeight; 
s += " 网页可见区域宽："+ document.body.offsetWidth  +" (包括边线和滚动条的宽)"; 
s += " 网页可见区域高："+ document.body.offsetHeight +" (包括边线的宽)"; 
s += " 网页正文全文宽："+ document.body.scrollWidth; 
s += " 网页正文全文高："+ document.body.scrollHeight; 
s += " 网页被卷去的高："+ document.body.scrollTop; 
s += " 网页被卷去的左："+ document.body.scrollLeft; 
s += " 网页正文部分上："+ window.screenTop; 
s += " 网页正文部分左："+ window.screenLeft; 
s += " 屏幕分辨率的高："+ window.screen.height; 
s += " 屏幕分辨率的宽："+ window.screen.width; 
s += " 屏幕可用工作区高度："+ window.screen.availHeight; 
s += " 屏幕可用工作区宽度："+ window.screen.availWidth; 
s += " 你的屏幕设置是 "+ window.screen.colorDepth +" 位彩色"; 
s += " 你的屏幕设置 "+ window.screen.deviceXDPI +" 像素/英寸"; 
alert(s); 
</SCRIPT> 

    function openBrWindowInCentre(theURL,width,height) {
      var left, top;
      left = (window.screen.availWidth - width) / 2;
      top = (window.screen.availHeight - height) / 2;
      var per = 'width=' + width + ',height=' + height + ',left=' + left + ',top=' + top + ',screenX=' + left + ',screenY=' + top;
      window.open(theURL,'',per);
    }

<DIV ID="oDiv" STYLE="background-color:   #CFCFCF;   position:   absolute; left:expression(document.body.clientWidth/2-oDiv.offsetWidth/2); top:expression(((document.body.clientHeight/2-oDiv.offsetHeight/2)<0)?0:(document.body.clientHeight/2-oDiv.offsetHeight/2))">

<script   language="javascript">   
  function   switchSpan(spanId)
{  
  if(document.all[spanId].style.visibility=="visible")   
     document.all[spanId].style.visibility="hidden";   
  else
  {   
    document.all[spanId].style.visibility="visible";   
    document.all[spanId].style.left=document.body.scrollLeft+document.body.offsetWidth/2-315;
    document.all[spanId].style.top=document.body.scrollTop+document.body.offsetHeight/2-76;
  }   
}   
</script>
<script   language="JavaScript">   
var   dragapproved=false；
var   z,x,y ；
function   move()
{   
  if(event.button==1&&dragapproved)
  {   
     z.style.pixelLeft=temp1+event.clientX-x;
     z.style.pixelTop=temp2+event.clientY-y;
     return false;
   }
}   
function drags()
{   
  if (!document.all)   
  return;
  if (event.srcElement.className=="drag")
  {   
   dragapproved=true;   
   z=event.srcElement   
   temp1=z.style.pixelLeft;
   temp2=z.style.pixelTop;     
   x=event.clientX;   
   y=event.clientY;  
   document.onmousemove=move;
  }
}   
document.onmousedown=drags   
document.onmouseup=new  Function("dragapproved=false");
</script>   

function loadBar(fl) 
{
  //fl is show/hide flag  
  var x,y; 
  if (self.innerHeight) 
  {
    // all except Explorer 
    x = self.innerWidth; 
    y = self.innerHeight; 
  } 
  else if (document.documentElement && document.documentElement.clientHeight) 
  {
    // Explorer 6 Strict Mode 
    x = document.documentElement.clientWidth; 
    y = document.documentElement.clientHeight; 
  } 
  else 
  if (document.body) 
  {
    // other Explorers 
    x = document.body.clientWidth; 
    y = document.body.clientHeight; 
  } 
  var el=document.getElementById('loader'); 
  if(null != el) 
  { 
    var top = (y/2) - 50; 
    var left = (x/2) - 200; 
    if( left<=0 ) left = 10; 
    el.style.visibility = (fl==1)?'visible':'hidden'; 
    el.style.display = (fl==1)?'block':'none'; 
    el.style.left = left + "px" 
    el.style.top = top + "px"; 
    el.style.zIndex = 2; 
  } 
}