function setHome(){
    if (document.all){
        document.body.style.behavior='url(#default#homepage)';
        document.body.setHomePage('http://www.nimclick.com');
    }else if (window.sidebar){
        if(window.netscape){
            try{
                netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
            }
            catch(e){
                alert("Your browser does not allow us to automatically add this as your home page.  Please add us to your homepage manually.");
                /*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', 'http://www.nimclick.com');
    }
}