'click' a website's button with excel

Question

I have a script I am writing where I can execute a form on a website through a macro. I am able to open up internet explorer and pass all the variables correctly however when it comes time to submit, I am a bit lost.

this is the element on the website i want to click - it is a button titled "buy"

<input type="submit" name="submit" value="Buy">

I have two problems:

1) i don't know how to properly reference this within vba 2) there is a button right next to it that will perform a sell (the exact opposite of what i want to do) and the element for that is:

<input type="submit" name="submit" value="Sell">

Does anyone know appropriate code to hit the 'buy' button?

here is my code thus far:

Dim IE As Object
Set IE = New InternetExplorer
IE.Visible = True
IE.Navigate "somewebsite.com"

Do While IE.Busy: DoEvents: Loop
Do While IE.ReadyState <> 4: DoEvents: Loop
IE.Document.All("resourceoption").Value = "item"
IE.Document.All("amount").Value = 1
IE.Document.All("priceper").Value = 99
Do While IE.Busy: DoEvents: Loop
Do While IE.ReadyState <> 4: DoEvents: Loop

Answer 1

With IE.document

    Set elems = .getElementsByTagName("input")
    For Each e In elems

        If (e.getAttribute("value") = "Buy") Then
            e.Click
            Exit For
        End If

    Next e

End With

the above snippet performs the task needed