/* Add JavaScript after this comment. */
var OAS_url = OAS_url = 'http://oas.services.bmj.com/RealMedia/ads/';
OAS_sitepage = window.location.hostname + window.location.pathname;
OAS_listpos = 'Top,Right1';
OAS_query = '';
OAS_target = '_top';
//end of configuration
var OAS_version = 10;
var OAS_rn = '001234567890'; OAS_rns = '1234567890';
var OAS_rn = new String (Math.random()); 
OAS_rns = OAS_rn.substring (2, 11);

document.write('');
function OAS_AD(pos) {
if (OAS_version >= 11)
OAS_RICH(pos);
else
OAS_NORMAL(pos);
}

OAS_version = 11;
if ((navigator.userAgent.indexOf('Mozilla/3') != -1) || (navigator.userAgent.indexOf('Mozilla/4.0 WebTV') != -1))
OAS_version = 10;
if (OAS_version >= 11)
document.write('<SCR' + 'IPT LANGUAGE=JavaScript1.1 SRC="' + OAS_url + 'adstream_mjx.ads/' + OAS_sitepage + '/1' + OAS_rns + '@' + OAS_listpos + '?' + OAS_query + '"><\/SCRIPT>');

function OAS_NORMAL(pos) {
document.write('<A HREF="' + OAS_url + 'click_nx.ads/' + OAS_sitepage + '/1' + OAS_rns + '@' + OAS_listpos + '!' + pos + '?' + OAS_query + '" TARGET=' + OAS_target + '>');
document.write('<IMG SRC="' + OAS_url + 'adstream_nx.ads/' + OAS_sitepage + '/1' + OAS_rns + '@' + OAS_listpos + '!' + pos + '?' + OAS_query + '" BORDER=0></A>');
}