Google Chrome vs IE7

Google Chrome vs IE7

I am using Google Chrome, there are no any problems with jQuery UI,
I have also add
    meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7"
    meta http-equiv="X-UA-Compatible" content="IE=EmulateIE8"

but in IE7:
1. Button is always square in IE7 but Chrome has circle horn ....
2. This 'textbox' not work:
$('#LoginPassword').click(function () {
        var oldBox = $(this);
        var newBox = oldBox.clone();
        newBox.attr('type', 'password');
        newBox.insertBefore(oldBox);
        newBox.select();
        oldBox.remove();
});
3. event.preventDefault(); is work in Chrome but IE7 is bypass!!!!

Could everyone fix above problems?