function home1(){document.getElementById('home').src = 'i/header/arrow.jpg';}
function home2(){document.getElementById('home').src = 'i/header/arrow_homebg.jpg';}

function people1(){document.getElementById('people').src = 'i/header/arrow.jpg';}
function people2(){document.getElementById('people').src = 'i/header/arrow_homebg.jpg';}

function web1(){document.getElementById('web').src = 'i/header/arrow.jpg';}
function web2(){document.getElementById('web').src = 'i/header/arrow_homebg.jpg';}

function multimedia1(){document.getElementById('multimedia').src = 'i/header/arrow.jpg';}
function multimedia2(){document.getElementById('multimedia').src = 'i/header/arrow_homebg.jpg';}

function graphic1(){document.getElementById('graphic').src = 'i/header/arrow.jpg';}
function graphic2(){document.getElementById('graphic').src = 'i/header/arrow_homebg2.jpg';}

function digital1(){document.getElementById('digital').src = 'i/header/arrow.jpg';}
function digital2(){document.getElementById('digital').src = 'i/header/arrow_homebg2.jpg';}

function news1(){document.getElementById('news').src = 'i/header/arrow.jpg';}
function news2(){document.getElementById('news').src = 'i/header/arrow_homebg2.jpg';}

function contact1(){document.getElementById('contact').src = 'i/header/arrow.jpg';}
function contact2(){document.getElementById('contact').src = 'i/header/arrow_homebg2.jpg';}

function marketing1(){document.getElementById('marketing').src = 'i/header/arrow.jpg';}
function marketing2(){document.getElementById('marketing').src = 'i/header/arrow_homebg2.jpg';}

function advertising1(){document.getElementById('advertising').src = 'i/header/arrow.jpg';}
function advertising2(){document.getElementById('advertising').src = 'i/header/arrow_homebg2.jpg';}