webbrowser单击按钮请教高手一下

[heizai1317]

我在用webbrowswer控件想单击“下一步”这个按钮怎么写代码。有没有办法这个判断这三个按钮哪个
是“下一步”按钮，如果是，就是单击按钮？
跪拜高手指教。
<input type=submit name=submit value='上一步' >
<input type=submit name=submit value='下一步' >
<input type=submit name=submit value='确定' >

[s11ss]

For Each o In WebBrowser1.Document.All("submit")
If o.Value = "下一步" Then
o.Click
Exit For
End If
Next

[tonyones]

For i = 0 To WebBrowser1.Document.submit.length - 1
If WebBrowser1.Document.All.submit(i).Value = "下一步" Then
WebBrowser1.Document.All.submit(i).Click
End If
Next

[无·法]

Dim wb1 As New clsWBMaster
wb1.ClickTag WebBrowser1, wmTagInput, wmAttribValue, "下一步"

需引用如下dll：
http://commonprogrames.googlecode.com/files/WBMaster.rar