function preloadImages() {
  var d=document; if(d.images) {
    if(!d.p) d.p=new Array();
    var i,j=d.p.length,a=preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0) {
      d.p[j]=new Image; d.p[j++].src=a[i];
    }
  }
}

function swapImgRestore() {
  var i,x,a=document.sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function findObj(n, d) {
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);
  }
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function swapImage() {
  var i,j=0,x,a=swapImage.arguments; document.sr=new Array; for(i=0;i<(a.length-2);i+=3)
  if ((x=findObj(a[i]))!=null) {
    document.sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];
  }
}



/*-------------------------------------------------------------------------------------------------------------------------------------*/
/*从后台获取用户登录状态*/
/*-------------------------------------------------------------------------------------------------------------------------------------*/
function createobj()
{ 
    if (window.ActiveXObject) 
    { 
        return new ActiveXObject("Microsoft.XMLHTTP"); 
    } 
    else if (window.XMLHttpRequest) 
    { 
        return new XMLHttpRequest(); 
    } 
} 

function getOs()
{
    if(navigator.userAgent.indexOf("MSIE")>0)return 1;
    if(isFirefox=navigator.userAgent.indexOf("Firefox")>0)return 2;
    if(isSafari=navigator.userAgent.indexOf("Safari")>0)return 3;   
    if(isCamino=navigator.userAgent.indexOf("Camino")>0)return 4;
    if(isMozilla=navigator.userAgent.indexOf("Gecko/")>0)return 5;
    return 0;
}

function getWebPage() 
{
    if (document.getElementById("SpanLogout")==null)
    {       
        return;
    }
    try 
    {            
        var aLocation = href.split("/");   
        var sRootURL = aLocation[0] + "//" + aLocation[2] + "/";  
        var url=sRootURL + "myaccount/getuserstate.aspx";   
        var oBao=createobj(); 
        switch(getOs())
        {
           case 1:
           {
                oBao.open('Post',url,true);
                break;
           }           
           case 2:
           {
                oBao.open('Get',url,true);
                break;
           }
           default:
           {
                oBao.open('Post',url,true);
                break;
           }
        }        
        
        oBao.onreadystatechange=function()
        { 
            if(oBao.readyState==4)
            {
                if(oBao.status==200)
                { 
                    var returnStr=oBao.responseText;
                    if (returnStr!="")
                    {   
                       document.getElementById("SpanUserName").innerHTML = returnStr;
                       document.getElementById("SpanLogout").className = 'show';
                    } 
                    else
                    {
                        document.getElementById("SpanUserName").innerHTML = '';             
                        document.getElementById("SpanLogout").className = 'hide';
                    }
                             
                }
            }             
        }         
        oBao.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
        oBao.setRequestHeader("Content-Length", 0); //提交的数据的length
        oBao.setRequestHeader("Connection", "close"); 
        oBao.send(null); 
    }
    catch(err)  
    {  
        
    }            
} 

var href=self.location.href;
//if (parseInt(href.indexOf(".htm"))>-1)
//{
if (document.all) 
{   
    window.attachEvent('onload',getWebPage);
}
else
{
    window.addEventListener('load', getWebPage, false);   
}
//} 
/*-------------------------------------------------------------------------------------------------------------------------------------*/