function Jtrim(str)
{
    var i = 0;
    var len = str.length;
    if ( str == "" ) return( str );
    j = len -1;
    flagbegin = true;
    flagend = true;
    while (( flagbegin == true) && (i< len))
    {
        if ( str.charAt(i) == " " )
        {
            i=i+1;
            flagbegin=true;
        }
        else
        {
            flagbegin=false;
        }
    }

    while ((flagend== true) && (j>=0))
    {
        if (str.charAt(j)==" ")
        {
            j=j-1;
            flagend=true;
        }
        else
        {
            flagend=false;
        }
    }

    if ( i > j ) return ("");

    trimstr = str.substring(i,j+1);
    return trimstr;
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  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=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function setHomepage(url){　 // 设置首页   
    if (document.all){   
        document.body.style.behavior = 'url(#default#homepage)';   
        document.body.setHomePage(url);   
    }else if (window.sidebar){   
        if (window.netscape){   
            try {   
                netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");   
            }catch (e) {   
                alert("该操作被浏览器拒绝，如果想启用该功能，请在地址栏内输入 about:config,然后将项 signed.applets.codebase_principal_support 值该为true");   
            }   
        }   
        var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);   
        prefs.setCharPref('browser.startup.homepage', url);   
    }   
}    

function addFavorite(url, title){　 // 收藏本站   
    if (document.all){   
        window.external.addFavorite(url, title);   
    }else if (window.sidebar){   
        window.sidebar.addPanel(title, url, "");   
    }  
}