Can the 'Show/Hide Columns' option be shown or hidden in the url

Can the 'Show/Hide Columns' option be shown or hidden in the url

Is there a switch in a url that will enable or disable the Show/Hide Columns option? In some reports I want to start with only a few fields and let the user choose the additional columns they need to see.

In reports available to my customer portal users the 'Show/Hide Columns' option does not show. For some reports I need this option.