function sAlert(str, ww, hh, strBgColor, showTitle){
  var msgw,msgh,bordercolor;
  msgw=ww;
  msgh=hh;
  titleheight=25
  bordercolor="#900";
  titlecolor="#99CCFF";
  var sWidth,sHeight;
  sWidth=screen.width;
  sHeight=screen.height;
  
  var bgObj=document.createElement("div");
  bgObj.setAttribute('id','bgDiv');
  bgObj.style.position="absolute";
  bgObj.style.top="0";
  bgObj.style.background="#777";
  bgObj.style.filter="progid:DXImageTransform.Microsoft.Alpha(style=3,opacity=25,finishOpacity=55";
  bgObj.style.opacity="0.6";
  bgObj.style.left="0";
  bgObj.style.width=sWidth + "px";
  //bgObj.style.height=sHeight + "px";
  bgObj.style.height="1550px";
  bgObj.style.zIndex = "10000";
  document.body.appendChild(bgObj)
  
  var msgObj=document.createElement("div")
  msgObj.setAttribute("id","msgDiv");
  msgObj.setAttribute("align","center");
  msgObj.style.background="white";
  msgObj.style.border="1px solid " + bordercolor;
  msgObj.style.position = "absolute";
  msgObj.style.backgroundColor = strBgColor;
  
  msgObj.style.left = (sWidth - ww)/2;
  msgObj.style.top = (sHeight - hh - 100)/2;
  
  msgObj.style.font="12px/1.6em Verdana, Geneva,Arial, Helvetica, sans-serif";
  //msgObj.style.marginLeft = "-225px" ;
  //msgObj.style.marginTop = -75 + document.documentElement.scrollTop+"px";
  msgObj.style.width = msgw + "px";
  msgObj.style.height =msgh + "px";
  msgObj.style.textAlign = "center";
  msgObj.style.lineHeight ="25px";
  msgObj.style.zIndex = "10001";
 
 if (showTitle) {
  var title=document.createElement("h4");
  title.setAttribute("id","msgTitle");
  title.setAttribute("align","right");
  title.style.margin="0";
  title.style.padding="5px";
  title.style.background=bordercolor;
  title.style.filter="progid:DXImageTransform.Microsoft.Alpha(startX=20, startY=20, finishX=100, finishY=100,style=1,opacity=75,finishOpacity=100);";
  title.style.opacity="0.75";
  title.style.border="1px solid " + bordercolor;
  title.style.height="22px";
  title.style.font="12px Verdana, Geneva, Arial, Helvetica, sans-serif";
  title.style.color="white";
  title.style.cursor="pointer";
  title.innerHTML="关闭";
  title.onclick=removeObj;  
 }
 
  var button=document.createElement("input");//创修一个input对象（提示框按钮）
  button.setAttribute("id","b_t_n_1");
  button.setAttribute("type","button");
  button.setAttribute("value","关 闭");
  button.style.width="60px";
  button.style.align="center";
  //button.style.marginLeft="250px";
  button.style.marginBottom="10px";
  button.style.background=bordercolor;
  button.style.border="1px solid "+ bordercolor;
  button.style.color="white";
  button.onclick=removeObj;
  
  function removeObj(){
	document.body.removeChild(bgObj);
	if (showTitle) {document.getElementById("msgDiv").removeChild(title); }
	document.body.removeChild(msgObj);
  }
  
  document.body.appendChild(msgObj);
  if (showTitle) {document.getElementById("msgDiv").appendChild(title);}
  var txt=document.createElement("p");
  //txt.style.margin="1em 0"
  txt.setAttribute("id","msgTxt");
  txt.innerHTML=str;
  document.getElementById("msgDiv").appendChild(txt);
  document.getElementById("msgDiv").appendChild(button);
}


  function open2()
  {
	  document.getElementById('b_t_n_1').click();
      sAlert(document.getElementById('divhelp2').innerHTML, 808,630, '#fefefe', false);
  }