Ecco come fare....

codice:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
<title>Untitled</title>
<script language="JavaScript" type="text/javascript">
<!--
function provacreatabelladinamica() { 
htmlCode = ""

htmlCode += "
tabella lotto-superenalotto
per ulteriori velocissime
elaborazioni dinamiche"; 
htmlCode += "

"; 
htmlCode += "<table align=center border=1 bgcolor=yellow><td width=200>"; 
htmlCode += "<tr><td>Sono creato automaticamente</td></tr>"; 
htmlCode += "</table>"; 
return htmlCode;
} 

//----------------- 

function azione() { 
document.getElementById('div1').innerHTML=provacreatabelladinamica(); 
}

//-->
</script>
</head>
<body>
<div id="div1"></div>
<script language="JavaScript" type="text/javascript">
<!--
azione();
//-->
</script>

</body>
</html>