function addBookmark(url, title)
{
  if (!url) url = location.href;
  if (!title) title = document.title;
  
  //Gecko
  if ((typeof window.sidebar == "object") && (typeof window.sidebar.addPanel == "function")) window.sidebar.addPanel (title, url, "");
  //IE4+
  else if (typeof window.external == "object") window.external.AddFavorite(url, title);
  //Opera7+
  else if (window.opera && document.createElement)
  {  
    var a = document.createElement('A');
    if (!a) return false; //IF Opera 6    
    a.setAttribute('rel','sidebar');        
    a.setAttribute('href',url);
    a.setAttribute('title',title);
    a.click();        
    
  }
  else return false; 
  return true;
}

function setHomepage(url,title)
{
  if (!url) url = location.href;
  if (!title) title = document.title;
 if (document.all)
    {
        document.body.style.behavior='url(#default#homepage)';
  document.body.setHomePage(title);
 
    }
    else if (window.sidebar)
    {
    if(window.netscape)
    {
         try
    {  
            netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");  
         }  
         catch(e)  
         {  
            alert("This action was aviod by your browser，if you want to enable，please enter about:config in your address line,and change the value of signed.applets.codebase_principal_support to true");
         }
    } 
    var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components. interfaces.nsIPrefBranch);
    prefs.setCharPref('browser.startup.homepage',url);
 }
}


function getBrowserInfo() {
 var t,v = undefined;
 if (window.opera) t = 'Opera';
 else if (document.all) {
  t = 'IE';
  var nv = navigator.appVersion;
  var s = nv.indexOf('MSIE')+5;
  v = nv.substring(s,s+1);
 }
 else if (navigator.appName) t = 'Netscape';
 return {type:t,version:v};
}
 
function bookmark(a){
 var url = window.document.location;
 var title = window.document.title;
 var b = getBrowserInfo();
 if (b.type == 'IE' && 7 > b.version && b.version >= 4) window.external.AddFavorite(url,title);
 else if (b.type == 'Opera') {
  a.href = url;
  a.rel = "sidebar";
  a.title = url+','+title;
  return true;
 }
 else if (b.type == "Netscape") window.sidebar.addPanel(title,url,"");
 else alert("Нажмите CTRL-D, чтобы добавить страницу в закладки.");
 return false;
}