var img = new Array;
img[1] = new Image;
img[2] = new Image;
img[3] = new Image;
img[4] = new Image;
img[5] = new Image;
img[6] = new Image;
img[1].src = '../images/m_home_a.gif';
img[2].src = '../images/m_francis_a.gif';
img[3].src = '../images/m_program_a.gif';
img[4].src = '../images/m_history_a.gif';
img[5].src = '../images/m_tandt_a.gif';
img[6].src = '../images/m_links_a.gif';

function chimg(i,s) {
 document.images[i].src = s;
}