thanks, but I'm referring to the url target window.
I have 4 worksheets, and after saving as html, they all appear as tabs, and
clicking on each link will display the worksheet in a frame location, for eg.
{a href="sheet003.htm" target="fr_sheet"}
when i used HYPERLINK(formulae), it automatically generates:
{a href="sheet003.htm" target="_parent"}
and clicking this link displays the page outside the frame.