This is a good option to select viewport , assigned to space key it is very fast
Whichever view the mouse pointer is over when space bar is pushed is selected , space again back to 4 panes

script:if ( moi.ui.mainWindow.viewpanel.mode != 'split' ) { moi.ui.mainWindow.viewpanel.mode = 'split' } else { var viewport = moi.ui.getViewportUnderMouse(); if ( viewport ) { viewport.viewPanel.mode = viewport.name } }

cheers
shayne