function writeHeader() {    // 
document.write('<table border="0" cellspacing="0" cellpadding="0">');
document.write('<tr>');
document.write('<td align="left" width="184"><img src="/Chemical_Services/molfit/images/logo.gif" width="184" height="137" border="0"></td>');
document.write('<td align="left" width="374"><img src="/Chemical_Services/molfit/images/top_mid.gif" border="0" width="373" height="137"></td>');
document.write('<td align="left" width="242"><img src="/Chemical_Services/molfit/images/top_wis.gif" border="0" width="211" height="137"></td>');
document.write('<td background="/Chemical_Services/molfit/images/bc_hd.gif" width="100%"><img src="/Chemical_Services/molfit/images/spacer.gif" width="1" height="137" border="0"></td>');
document.write('</tr>');
document.write('</table>');

}