The following code will take a browser that is open to Google.com and open a new tab, then nagivate to eyeontesting.com on the new tab, then will close just the google.com tab. Modify for your needs...
'Browser is open to Google.com
Browser(''Google'').Page(''Google'').WebEdit(''q'').Set ''eyeontesting''
Browser(''Google'').Page(''orasi - Google Search'').WebButton(''btnG'').Click
Browser(''Google'').OpenNewTab
Browser(''Browser'').Page(''Page'').Sync
Browser(''Browser'').Navigate ''eyeontesting.com''
CloseBrowserByTitle ''Google'', true
Sub CloseBrowserByTitle(title, isregex)
Set desc = Description.Create()
desc(''title'').Value = title
desc(''title'').RegularExpression = isregex
desc(''index'').Value = ''0''
While Browser(desc).Exist(5)
Browser(desc).Close
Wend
End Sub