VBA for MAC navigating in internet

[danifitti]

I have a Google Analytics Macro that works perfectly fine in Windows, but I need to use it in MAC.
I am having trouble opening a browser and navigating in it, including this code here:

 Set HTMLDoc = oIExplorer.document
    HTMLDoc.all.Email.Value = GAlogin ‘this is a string I got in another part of the code
    HTMLDoc.all.passwd.Value = GApassword ‘this is a string I got in another part of the code
    For Each objButton In HTMLDoc.getElementsByTagName("input")
        If objButton.Type = "submit" Then
            objButton.Click
            Exit For
        End If
    Next objButton

I found ways to open and navigate browser, but none of them would support this kind of code. More specifically, none of them allowed the 'getElementsByTagName' part nor going through the elements and clicking a button.
Does anyone know how I could navigate and use a browser in MAC that would support this functions?