// begin function to toggle sidebar elements, e.g. collapse.
function toggle(turn_offID, turn_onID) {

	// Initialize our object data from our XHTML divs.	
    var turn_offOBJ = document.getElementById(turn_offID);
    var turn_onOBJ = document.getElementById(turn_onID);

    // ...
    turn_offOBJ.style.display = "none";
    turn_onOBJ.style.display = "inline-block";
    
    return false;

}