function OAS_RICH(position) {
if (position == 'x01') {
document.write ('<!-- ceci est un essai -->\n');
}
if (position == 'x10') {
document.write ('<!-- ceci est un essai -->\n');
}
if (position == 'Top3') {
document.write ('<SCRIPT language=');
document.write ("'");
document.write ('JavaScript1.1');
document.write ("'");
document.write (' SRC="http://ad.fr.doubleclick.net/adj/N884.lemonde.komet/B2102536.2;sz=200x80;click0=http://pubs.lemonde.fr/RealMedia/ads/click_lx.ads/SCIENCES-LEMONDE/articles_sciences/exclu/1355046155/Top3/OasDefault/lm_ftagence_rg_dec_ore/ft200.html/38323331646461373435383137636230?;click=;ord=1355046155?">\n');
document.write ('</SCRIPT>\n');
document.write ('<NOSCRIPT>\n');
document.write ('<A HREF="http://pubs.lemonde.fr/RealMedia/ads/click_lx.ads/SCIENCES-LEMONDE/articles_sciences/exclu/1355046155/Top3/OasDefault/lm_ftagence_rg_dec_ore/ft200.html/38323331646461373435383137636230?http://ad.fr.doubleclick.net/jump/N884.lemonde.komet/B2102536.2;sz=200x80;ord=1355046155?">\n');
document.write ('<IMG SRC="http://ad.fr.doubleclick.net/ad/N884.lemonde.komet/B2102536.2;sz=200x80;ord=1355046155?" BORDER=0 WIDTH=200 HEIGHT=80 ALT="Cliquez ici !"></A>\n');
document.write ('</NOSCRIPT>');
}
if (position == 'Middle') {
document.write ('<a href="http://www.mondepub.fr/tarifs2006/tarifs_web_2006.pdf" target=_blank><img src="http://a1692.g.akamai.net/n/1692/2042/1077898746/pubs.lemonde.fr/RealMedia/ads/Creatives/OasDefault/publicite/pub250t.gif" border=0></a><br>\n');
document.write ('<SCRIPT LANGUAGE="JavaScript1.1" SRC="http://www.smartadserver.com/call/adj/346/121469/lemonde.pgm/250x250/2006.12.14.16.32.52763545363/no?http://pubs.lemonde.fr/RealMedia/ads/click_lx.ads/SCIENCES-LEMONDE/articles_sciences/exclu/763545363/Middle/OasDefault/lm_fnce_rg_dec_middle/fnce250.html/38323331646461373435383137636230?"></SCRIPT>\n');
document.write ('<NOSCRIPT><a href="http://pubs.lemonde.fr/RealMedia/ads/click_lx.ads/SCIENCES-LEMONDE/articles_sciences/exclu/763545363/Middle/OasDefault/lm_fnce_rg_dec_middle/fnce250.html/38323331646461373435383137636230?http://www.smartadserver.com/call/jumpi/346/121469/lemonde.pgm/250x250/2006.12.14.16.32.52763545363/no?" target="_blank"><img src="http://www.smartadserver.com/call/adi/346/121469/lemonde.pgm/250x250/2006.12.14.16.32.52763545363/no?" border="0"></a></NOSCRIPT>');
}
if (position == 'Top1') {
document.write ('<script SRC="http://pubs.lemonde.fr/RealMedia/ads/cap.cgi?c=abo&dv=1&e=1d&s=1"></script>\n');
document.write ('<table border=0 cellpadding=0 cellspacing=0 style=padding-bottom:15px width=780>\n');
document.write ('<tr><td align=center><a href="http://www.mondepub.fr/tarifs2006/tarifs_web_2006.pdf" target=_blank><img src="http://a1692.g.akamai.net/n/1692/2042/1077898746/pubs.lemonde.fr/RealMedia/ads/Creatives/OasDefault/publicite/pub_label3.gif" border=0></a><br>\n');
document.write ('<SCRIPT LANGUAGE=JavaScript>\n');
document.write ('var oas_flashfile = "http://a1692.g.akamai.net/n/1692/2042/1077898746/pubs.lemonde.fr/RealMedia/ads/Creatives/OasDefault/mia_autopromo_top1_house/728X90-archives-MANDELA.swf?lemonde=http://pubs.lemonde.fr/RealMedia/ads/click_lx.ads/SCIENCES-LEMONDE/articles_sciences/exclu/566153847/Top1/OasDefault/mia_autopromo_top1_house/728X90-archives-MANDELA.htm/38323331646461373435383137636230";\n');
document.write ('var oas_imgfile = "http://a1692.g.akamai.net/n/1692/2042/1077898746/pubs.lemonde.fr/RealMedia/ads/Creatives/OasDefault/mia_autopromo_top1_house/";\n');
document.write ('var oas_taillex=728;\n');
document.write ('var oas_tailley=90;\n');
document.write ('var oas_nomobj="skync";\n');
document.write ('var oas_plugin = 0;\n');
document.write ('if (navigator.mimeTypes && navigator.mimeTypes["application/x-shockwave-flash"] && navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin)\n');
document.write ('{\n');
document.write ('if (navigator.plugins && navigator.plugins["Shockwave Flash"])\n');
document.write ('oas_plugin = 1;\n');
document.write ('}\n');
document.write ('else if (navigator.userAgent && navigator.userAgent.indexOf("MSIE")>=0 && (navigator.userAgent.indexOf("Windows 95")>=0 || navigator.userAgent.indexOf("Windows 98")>=0 || navigator.userAgent.indexOf("Windows NT")>=0))\n');
document.write ('{\n');
document.write ('document.write(');
document.write ("'");
document.write ('<SCRIPT LANGUAGE=VBScript\\');
document.write ('> \\');
document.write ('n');
document.write ("'");
document.write (');\n');
document.write ('document.write(');
document.write ("'");
document.write ('on error resume next \\');
document.write ('n');
document.write ("'");
document.write (');\n');
document.write ('document.write(');
document.write ("'");
document.write ('oas_plugin = ( IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.3")))\\');
document.write ('n');
document.write ("'");
document.write (');\n');
document.write ('document.write(');
document.write ("'");
document.write ('if ( oas_plugin <= 0 ) then oas_plugin = ( IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.4")))\\');
document.write ('n');
document.write ("'");
document.write (');\n');
document.write ('document.write(');
document.write ("'");
document.write ('if ( oas_plugin <= 0 ) then oas_plugin = ( IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.5")))\\');
document.write ('n');
document.write ("'");
document.write (');\n');
document.write ('document.write(');
document.write ("'");
document.write ('</SCRIPT\\');
document.write ('> \\');
document.write ('n');
document.write ("'");
document.write (');\n');
document.write ('}\n');
document.write ('if ( oas_plugin )\n');
document.write ('{\n');
document.write ('document.write(');
document.write ("'");
document.write ('<OBJECT classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"');
document.write ("'");
document.write (');\n');
document.write ('document.write(');
document.write ("'");
document.write ('  codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=3,0,0,0" ');
document.write ("'");
document.write (');\n');
document.write ('document.write(');
document.write ("'");
document.write (' ID=');
document.write ("'");
document.write ('+oas_nomobj+');
document.write ("'");
document.write (' WIDTH=');
document.write ("'");
document.write ('+oas_taillex+');
document.write ("'");
document.write (' HEIGHT=');
document.write ("'");
document.write ('+oas_tailley+');
document.write ("'");
document.write ('>');
document.write ("'");
document.write (');\n');
document.write ('document.write(');
document.write ("'");
document.write (' <PARAM NAME=movie VALUE="');
document.write ("'");
document.write ('+oas_flashfile+');
document.write ("'");
document.write ('"> <PARAM NAME=quality VALUE=high><PARAM NAME=wmode VALUE=transparent>');
document.write ("'");
document.write (');\n');
document.write ('document.write(');
document.write ("'");
document.write (' <EMBED src="');
document.write ("'");
document.write ('+oas_flashfile+');
document.write ("'");
document.write ('" quality=high wmode=transparent');
document.write ("'");
document.write (');\n');
document.write ('document.write(');
document.write ("'");
document.write (' swLiveConnect=FALSE WIDTH=');
document.write ("'");
document.write ('+oas_taillex+');
document.write ("'");
document.write (' HEIGHT=');
document.write ("'");
document.write ('+oas_tailley+');
document.write ("'");
document.write (' ');
document.write ("'");
document.write (');\n');
document.write ('document.write(');
document.write ("'");
document.write (' TYPE="application/x-shockwave-flash" PLUGINSPAGE="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash">');
document.write ("'");
document.write (');\n');
document.write ('document.write(');
document.write ("'");
document.write (' </EMBED>');
document.write ("'");
document.write (');\n');
document.write ('document.write(');
document.write ("'");
document.write (' </OBJECT>');
document.write ("'");
document.write (');\n');
document.write ('}\n');
document.write ('else if (!(navigator.appName && navigator.appName.indexOf("Netscape")>=0 && navigator.appVersion.indexOf("2.")>=0))\n');
document.write ('{\n');
document.write ('document.write(');
document.write ("'");
document.write ('<a href="http://pubs.lemonde.fr/RealMedia/ads/click_lx.ads/SCIENCES-LEMONDE/articles_sciences/exclu/566153847/Top1/OasDefault/mia_autopromo_top1_house/728X90-archives-MANDELA.htm/38323331646461373435383137636230">');
document.write ("'");
document.write (');\n');
document.write ('document.write(');
document.write ("'");
document.write ('<IMG SRC="');
document.write ("'");
document.write ('+oas_imgfile+');
document.write ("'");
document.write ('" WIDTH=');
document.write ("'");
document.write ('+oas_taillex+');
document.write ("'");
document.write (' HEIGHT=');
document.write ("'");
document.write ('+oas_tailley+');
document.write ("'");
document.write (' BORDER=0>');
document.write ("'");
document.write (');\n');
document.write ('document.write(');
document.write ("'");
document.write ('</A>');
document.write ("'");
document.write (');\n');
document.write ('}\n');
document.write ('//-->\n');
document.write ('</SCRIPT>\n');
document.write ('</td></tr></table>');
}
if (position == 'x96') {
document.write ('<A HREF="http://pubs.lemonde.fr/RealMedia/ads/click_lx.ads/SCIENCES-LEMONDE/articles_sciences/exclu/1181042878/x96/default/empty.gif/38323331646461373435383137636230" target="_blank"><IMG SRC="http://a1692.g.akamai.net/7/1692/2042/0/pubs.lemonde.fr/RealMedia/ads/Creatives/default/empty.gif"  WIDTH=2 HEIGHT=2 ALT="" BORDER=0 BORDER="0"></A>');
}
if (position == 'Frame1') {
document.write ('<div class="tp-box">\n');
document.write ('<b>\n');
document.write ('Conservez cet article dans votre classeur.\n');
document.write ('</b><br>\n');
document.write ('<a href="http://pubs.lemonde.fr/RealMedia/ads/click_lx.ads/SCIENCES-LEMONDE/articles_sciences/exclu/576106825/Frame1/OasDefault/mia_autopromos_edabo_lientexte/conservez_cet_article.html/38323331646461373435383137636230?2006.12.14.16.32.52" target=_blank><b>Abonnez-vous au Monde.fr : 6€ par mois + 30 jours offerts</b></u></a></div>');
}
if (position == 'Top2') {
document.write ('<A HREF="http://pubs.lemonde.fr/RealMedia/ads/click_lx.ads/SCIENCES-LEMONDE/articles_sciences/exclu/2076690373/Top2/default/empty.gif/38323331646461373435383137636230" target="_blank"><IMG SRC="http://a1692.g.akamai.net/7/1692/2042/0/pubs.lemonde.fr/RealMedia/ads/Creatives/default/empty.gif"  WIDTH=2 HEIGHT=2 ALT="" BORDER=0 BORDER="0"></A>');
}
if (position == 'Middle1') {
document.write ('<!---ceci est un essai -->');
}
if (position == 'Middle2') {
document.write ('<A HREF="http://pubs.lemonde.fr/RealMedia/ads/click_lx.ads/SCIENCES-LEMONDE/articles_sciences/exclu/581108775/Middle2/default/empty.gif/38323331646461373435383137636230" target="_blank"><IMG SRC="http://a1692.g.akamai.net/7/1692/2042/0/pubs.lemonde.fr/RealMedia/ads/Creatives/default/empty.gif"  WIDTH=2 HEIGHT=2 ALT="" BORDER=0 BORDER="0"></A>');
}
if (position == 'Bottom') {
document.write ('<A HREF="http://pubs.lemonde.fr/RealMedia/ads/click_lx.ads/SCIENCES-LEMONDE/articles_sciences/exclu/1781332581/Bottom/default/empty.gif/38323331646461373435383137636230" target="_blank"><IMG SRC="http://a1692.g.akamai.net/7/1692/2042/0/pubs.lemonde.fr/RealMedia/ads/Creatives/default/empty.gif"  WIDTH=2 HEIGHT=2 ALT="" BORDER=0 BORDER="0"></A>');
}
if (position == 'Bottom2') {
document.write ('<A HREF="http://pubs.lemonde.fr/RealMedia/ads/click_lx.ads/SCIENCES-LEMONDE/articles_sciences/exclu/121627368/Bottom2/default/empty.gif/38323331646461373435383137636230" target="_blank"><IMG SRC="http://a1692.g.akamai.net/7/1692/2042/0/pubs.lemonde.fr/RealMedia/ads/Creatives/default/empty.gif"  WIDTH=2 HEIGHT=2 ALT="" BORDER=0 BORDER="0"></A>');
}
if (position == 'Bottom1') {
document.write ('<A HREF="http://pubs.lemonde.fr/RealMedia/ads/click_lx.ads/SCIENCES-LEMONDE/articles_sciences/exclu/74450227/Bottom1/default/empty.gif/38323331646461373435383137636230" target="_blank"><IMG SRC="http://a1692.g.akamai.net/7/1692/2042/0/pubs.lemonde.fr/RealMedia/ads/Creatives/default/empty.gif"  WIDTH=2 HEIGHT=2 ALT="" BORDER=0 BORDER="0"></A>');
}
if (position == 'TopRight') {
document.write ('<!-- ceci est un essai -->\n');
}
}