Using ios uc browser open, after page slide up and down and then click the login button pop-up window will become gray, other browsers is normal,
The official template link http://demo.mobantu.com/modown/
The following figure

This is a popup window login js

 login: function () {
var that=this; 
JQuery (function ($) {
$('. Signin - loader. Erphp - login - must '), on (' click ', function () {
That. The body. The addClass (' sign - show '); 
If ($('. Sign. Container '), hasClass (' has - social ')) {
$('. Sign. Container '). The height (" 460 px "); 
} else {
$('. Sign. Container '). The height (" 430 px "); 
} 
$(' # sign - in '). The show (). The find (). The focus (); 
$(' # sign - up '). Hide (); 
Return false; 
}); 
$(' signup - loader ') on (' click ', function () {
That. The body. The addClass (' sign - show '); 
If ($('. Sign. Container '), hasClass (' has - social ')) {
$('. Sign. Container '). The height (" 510 px "); 
} else {
$('. Sign. Container '). The height (" 480 px "); 
} 
$(' # sign - up '). The show (). The find (). The focus (); 
$(' # sign - in '). Hide (); 
Return false; 
}); 
$(' signclose - loader ') on (' click ', function () {
That. Body. RemoveClass (' sign - show '); 
}); 
$(' sign - mask ') on (' click ', function () {
That. Body. RemoveClass (' sign - show '); 
}); 

$(' signinsubmit - loader ') on (' click ', function () {
If ($(" # value for user_login). Val ()==' ') {
Logtips (' user name cannot be empty) 
Return 
} 
If ($(" # user_pass "). The val ()==' ') {
Logtips (' password cannot be empty) 
Return 
} 
Logtips (" login, please wait... "); 
$(' signinsubmit - loader '). The attr (" disabled ", true); 
$.post (
_MBT. Uri + '/action/login. PHP', 
{
Log: $(" # value for user_login). Val (), 
The PWD: $(" # user_pass "). Val (), 
Action: "mobantu_login," 
}, 
The function (data) {
If ($. Trim (data)!={" 1 ") 
Logtips (" user name or password error "); 
$(' signinsubmit - loader '). The attr (" disabled ", false); 
} 
The else {
Logtips (" login is successful, jump in... "); 
location.reload(); 
} 
} 
); 
}); 

Could you tell me how to solve this to ah, want to provide the code