设立首页、加入收藏兼容IE、火狐、谷歌浏览器JS代码

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<script language="JavaScript">
<!―
//添加收藏夹
function AddFavorite(sURL, sTitle)
{
    try
    {
        window.external.addFavorite(sURL, sTitle);
    }
    catch (e)
    {
        try
        {
            window.sidebar.addPanel(sTitle, sURL, "");
        }
        catch (e)
        {
            alert("加入收藏失败，请使用Ctrl+D进行添加");
        }
    }
}
//设为首页
function setHomepage(){
	try {
	    document.body.style.behavior='url(#default#homepage)';
	    document.body.setHomePage(document.URL);
	}
	catch(e){
	       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',document.URL);
	 }
	}
//-->
</script>