function setUserName(){
 var username=getUserNameFromCookie("userNameWWW");
 document.formlogin.email.value=username;
}
 /*
	判断把焦点给用户名输入框或者是密码输入框
*/

function fouceToInput(){
	var errorCode=getUserNameFromCookie('passport_login_errorcode');//一个COOKIE为303的时候,就证明是密码错误,其它忽略
	// alert(document.getElementById("userinput"));
	if(errorCode==303){//密码错误，焦点给密码输入框
		document.getElementById("passwordinput").focus();
	}else{
	 
		document.getElementById("emailinput").focus();
	}
}

function checkinputemail()
{
	
	if(document.formlogin.email.value=="")
	{
		alert("请输入电子邮箱！");
		document.formlogin.email.focus();
		return false
	}
	 setUserNameToCookie("userNameWWW",document.formlogin.email.value,null);
	if(!(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/g.test(document.formlogin.email.value)))
	{
		alert("请输入你正确的邮箱地址！");
		document.formlogin.email.focus();
		return false;
	}
	return true;
}


function check()
{
	
	if(document.formlogin.email.value=="")
	{
		alert("请输入电子邮箱！");
		document.formlogin.email.focus();
		return false
	}
	 setUserNameToCookie("userNameWWW",document.formlogin.email.value,null);
	if(!(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/g.test(document.formlogin.email.value)))
	{
		alert("请输入你正确的邮箱地址！");
		document.formlogin.email.focus();
		return false;
	}
	 
	if(document.formlogin.password.value=="")
	{
		alert("请输入密码！");
		document.formlogin.password.focus();
		return false
	}
	//document.form1.submit();
	return true;
}

function check_username()
{
  //alert("check_username");
	setUserNameToCookie("userNameWWW",document.formlogin.email.value,null);
	document.formlogin.email.value = document.formlogin.email.value.replace(/\s/g,"");
}

function setUserNameToCookie(c_name,value,expiredays){
//alert("setUserNameToCookie");
var exdate=new Date();
exdate.setDate(exdate.getDate()+expiredays);
document.cookie=c_name+ "=" +escape(value)+
((expiredays==null) ? "" : ";expires="+exdate.toGMTString()+"; path="+"/"+";");

}

function getUserNameFromCookie(c_name){
//alert("getUserNameFromCookie");
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=");
  if (c_start!=-1)
    { 
    c_start=c_start + c_name.length+1; 
    c_end=document.cookie.indexOf(";",c_start);
    if (c_end==-1) c_end=document.cookie.length;
    return unescape(document.cookie.substring(c_start,c_end));
    } 
  }
return "";
}

 
function changediv(id){
 var object;
  if(id=='1'){
   object=document.getElementById('s2');
   object.className='none';
   object=document.getElementById('s3');
   object.className='none';
   object=document.getElementById('s4');
   object.className='mainback2a_Lbutter2R';
   
  }else if(id=='2'){
   object=document.getElementById('s3');
   object.className='none';
   object=document.getElementById('s1');
   object.className='mainback2a_Lbutter2L';
   object=document.getElementById('s4');
   object.className='mainback2a_Lbutter2R';   
   
  }else if(id=='3'){
   object=document.getElementById('s4');
   object.className='none';
   object=document.getElementById('s1');
   object.className='none';
   object=document.getElementById('s2');
   object.className='none';   
   
  }else if(id=='4'){
   object=document.getElementById('s1');
   object.className='none';
   object=document.getElementById('s2');
   object.className='none';
   object=document.getElementById('s3');
   object.className='none'; 
  }
 
  object=document.getElementById('s'+id);
  object.className='mainback2a_Lbutter2';
  for(i=1;i<5;i++){
   object=document.getElementById('index'+i);
   object.style.display='none';
  }
  object=document.getElementById('index'+id);
  object.style.display='block';
}