Développer une "pub" en flash

<DIV ID=pub STYLE="position:absolute;top:0;left:0;z-index:10"></DIV>
<SCRIPT LANGUAGE=JavaScript>
/* LAISSER CES LIGNES */
function showsup()
{
if(document.getElementById && ScanCookie("supersticiel" )==0)
{
document.getElementById("pub" ).style.width = larg;
document.getElementById("pub" ).style.height = haut;
document.getElementById("pub" ).innerHTML = html_haut+html_mil+html_bas;
setTimeout("closeSup()",30000);
CreationCookie("supersticiel",false);
}
}

function closeSup()
{
if(document.getElementById)
{
document.getElementById("pub" ).style.width = 1;
document.getElementById("pub" ).style.height = 1;
document.getElementById("pub" ).innerHTML = '';
}
}

function ScanCookie(variable)
{
cook = document.cookie;
variable += "=";
place = cook.indexOf(variable,0);
if (place <= -1)
return("0" );
else
{
end = cook.indexOf(";",place)
if (end <= -1)
return(unescape(cook.substring(place+variable.length,cook.length)));
else
return(unescape(cook.substring(place+variable.length,end)));
}
}

function CreationCookie(nom,valeur,permanent)
{
if(permanent)
{
dateExp = new Date(2020,11,11);
dateExp = dateExp.toGMTString();
ifpermanent = '; expires=' + dateExp + ';';
}
else
ifpermanent = '';
document.cookie = nom + '=' + escape(valeur) + ifpermanent;
}


if(document.all)
{
larg = document.body.clientWidth;
haut = document.body.clientHeight;
}
else
{
larg = screen.width;
haut = screen.height;
}

html_haut = "<TABLE WIDTH="+larg+" HEIGHT="+haut+"><TR><TD VALIGN=middle ALIGN=center BACKGROUND=img/grille.gif>";
html_bas = "</TD></TR></TABLE>";

/*
A VOUS DE MODIFER CES LIGNES
N'OUBLIEZ UN LIEN DE CE TYPE :
<A HREF=# onClick="closeSup();return(false)">texte ou image</A>
POUR POUVOIR REFERMER LA FENETRE SI LE VISITEUR N'EST PAS INTERESSE
*/
html_mil = "<MAP NAME=kitgrafik> <AREA SHAPE=rect COORDS=509,5,597,26 HREF=# onClick=\"closeSup();return(false)\"> <AREA SHAPE=rect COORDS=\"20,9,252,40\" HREF=http://www.kitgrafik.com TARGET=_blank> <AREA SHAPE=rect COORDS=\"12,58,591,459\" HREF=http://www.kitgrafik.com TARGET=_blank></MAP><TABLE WIDTH=600 CELLPADDING=0 CELLSPACING=0 BORDER=0>";
html_mil += " <TR>";
html_mil += "<TD><IMG SRC=img/kitgrafik.png BORDER=0 WIDTH=600 HEIGHT=463 HSPACE=0 VSPACE=0 USEMAP=#kitgrafik></TD>";
html_mil += "</TR>";
html_mil += "</TABLE>";
window.onload = showsup;
</SCRIPT>