function on_background(image) {
    document[image].src="../pics/company_alan_background_mouse.gif";
    }   
function off_background(image) {
    document[image].src="../pics/company_alan_background.gif";
    }
function on_factsheet(image) {
    document[image].src="../pics/company_alan_factsheet_mouse.gif";
    }   
function off_factsheet(image) {
    document[image].src="../pics/company_alan_factsheet.gif";
    }
function on_team(image) {
    document[image].src="../pics/company_alan_team_mouse.gif";
    }   
function off_team(image) {
    document[image].src="../pics/company_alan_team.gif";
    }
function on_owners(image) {
    document[image].src="../pics/company_alan_owners_mouse.gif";
    }   
function off_owners(image) {
    document[image].src="../pics/company_alan_owners.gif";
    }
    
// navigation 2 start
function on_equity(image) {
    document[image].src="../pics/equity_mouse.gif";
    }   
function off_equity(image) {
    document[image].src="../pics/equity.gif";
    }
// navigation 2 end

// navigation 3 start    
function on_team_management(image) {
    document[image].src="../pics/company_team_management_mouse.gif";
    }   
function off_team_management(image) {
    document[image].src="../pics/company_team_management.gif";
    }
function on_team_board(image) {
    document[image].src="../pics/company_team_board_mouse.gif";
    }   
function off_team_board(image) {
    document[image].src="../pics/company_team_board.gif";
    }
// navigation3 end