function writeHeader() {    // 
document.write('<table cellspacing="0" cellpadding="0" weight="100%">');
document.write('<tr><td><img src="hm.yagil.gif" width="179" height="38" border="0" alt="the MCB Department" ></td>');
document.write('<td><!-- wis logo table -->');

document.write('<img src="wis_hm.gif" width="187" height="41" border="0" hspace="160" alt"Weizmann Institute></td>');

document.write('</td><td></td>');
document.write('</tr>');
document.write('</table>');

}