function sAlert(str){
var msgw,msgh,bordercolor; 
msgw=400;//提示窗口的宽度 
msgh=100;//提示窗口的高度 
titleheight=25   //提示窗口标题高度 
bordercolor= "#c51100";//提示窗口的边框颜色 
titlecolor= "#c51100";//提示窗口的标题颜色 
var sWidth,sHeight; 
sWidth=document.body.scrollWidth;
sHeight=document.body.scrollHeight; 
var bgObj=document.createElement("div"); 
bgObj.setAttribute('id','bgDiv'); 
bgObj.style.position= "absolute"; 
bgObj.style.top= "0"; 
bgObj.style.background= "#000000"; 
bgObj.style.filter= "alpha(Opacity=30)"; 
bgObj.style.opacity= "0.6"; 
bgObj.style.left= "0"; 
bgObj.style.width=sWidth+"px"; 
bgObj.style.height=sHeight+"px"; 
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"; 
msgObj.style.position="absolute"; 
msgObj.style.left   =   "50%"; 
msgObj.style.top   =   "50%"; 
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"; 

      var   title=document.createElement( "h4"); 
      title.setAttribute( "id", "msgTitle"); 
      title.innerHTML=str;
      document.body.appendChild(msgObj); 
      document.getElementById( "msgDiv").appendChild(title);
} 

function closeShowDiv(){
var bjDiv=document.getElementById( "bgDiv");
var msgDiv=document.getElementById( "msgDiv");
var msgTitle=document.getElementById( "msgTitle");
document.body.removeChild(bjDiv);
msgDiv.removeChild(msgTitle);
document.body.removeChild(msgDiv);
window.location.reload();
}

function closeShowTitle(){
var bjDiv=document.getElementById( "bgDiv");
var msgDiv=document.getElementById( "msgDiv");
var msgTitle=document.getElementById( "msgTitle");
msgDiv.removeChild(msgTitle);
document.body.removeChild(msgDiv);
document.body.removeChild(bjDiv);
}