function loginCheck() 
{
  
  var form = document.getElementById("form1");  
  var user = form.f_user.value;
  var pass = form.f_pass.value;
    
  if (user == ''|| pass == '')
  {
	  alert('用户名和密码不能为空！');	 
  }
  else
  {
    var url = "http://mail.cbc.cn/login.php?f_user=" + user + "@cbc.cn&f_pass=" +  pass ;  
    window.open(url,''); 
  } 
  
  return false;  
}

function getPwd()
{
	location.href = 'getpassword.php';
	return false;
}

function setHome(obj,vrl)
{
    try
    {
            obj.style.behavior='url(#default#homepage)';
			obj.setHomePage(vrl);
    }
    catch(e){
            if(window.netscape) {
                    try {
                            netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect"); 
                    } 
                    catch (e) { 
                            alert("此操作被浏览器拒绝！\n请在浏览器地址栏输入“about:config”并回车\n然后将[signed.applets.codebase_principal_support]设置为'true'"); 
                    }
                    var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
                    prefs.setCharPref('browser.startup.homepage',vrl);
             }
    }
	
	return false;
}