If by 'API' you mean the HTML Object Library, then something like this sets the focus on a cell and clicks it (obviously you'll have to change the Set cell line so that it references the correct cell element):
Sub xx()
Dim cell As HTMLTableCell
Set cell = ie.document....the cell
cell.Focus
cell.Click
End Sub
But why start a new thread on the same problem? Keep everything in one thread and then people can easily see how far you've got and what you've tried.
In your other thread - h ttp://w ww.vbaexpress.com/forum/showthread.php?t=31798 - post the complete HTML source, not just a snippet, plus the Javascript source code of any included .js files