JavaScript - Problema con menu desplegable

que tal, me sale un mensaje de error en IE mientras que con Mozilla funciona perfectamente.
El mensaje es:

JavaScript error

Description: Se esperaba una funcion
Source: http:// la dirección de la página...
Line: 181

lo más raro es que la no existe tal línea.

El tema es que tiene un menu desplegable hecho en javascript (hecho con Dhtml Menu)
con el sig código, gracias de antemano por ayudarme, saludos.

esto en el head:
<script type="text/javascript" src="../code/stm31.js"></script>

y esto en el body:

<script type="text/javascript" language="JavaScript1.2">
<!--
beginSTM("menu1","static","0","0","none","false","true","310","250","150","150","","../images/blank.gif");
beginSTMB("auto","0","0","horizontally","../images/blank.gif","0","0","0","3","transparent","","tiled","#ffffc7","0","solid","0","Fade","50","0","0","0","0","0","0","1","#9b9271","true","#ffffc7","#ffffc7","#ffffc7","none");
appendSTMI("false","Menu Item 1","left","middle","","","-1","-1","0","sepline","#ffffff","transparent","../images/blank.gif","1","-1","-1","","","-1","-1","0","","","_self","Georgia","9pt","#c7bac4","normal","normal","none","Georgia","9pt","#b682a3","normal","normal","none","0","solid","#d6d6ce","#d6d6ce","#d6d6ce","#d6d6ce","#d6d6ce","#d6d6ce","#d6d6ce","#d6d6ce","","","","tiled","tiled");
appendSTMI("false","     Inicio     ","center","middle","","","-1","-1","0","normal","transparent","#fff0bd","","1","-1","-1","../images/blank.gif","../images/blank.gif","0","0","0","","inicio.html","_self","Georgia","8pt","#b682a3","normal","normal","none","Georgia","8pt","#990099","normal","normal","none","0","solid","#ffeda6","#ffffc7","#ffeda6","#ffeda6","#ffffc7","#ccbd84","#ffffc7","#ccbd84","Comienzo del sitio","linea.gif","../images/blank.gif","tiled","tiled");
appendSTMI("false","  Empresa  ","left","middle","","","-1","-1","0","normal","transparent","#fff0bd","","1","-1","-1","../images/blank.gif","../images/blank.gif","0","0","0","","javascript:abrir_ventana(\'empresa.html\',\'\',\',\')","_self","Georgia","8pt","#b682a3","normal","normal","none","Georgia","8pt","#990099","normal","normal","none","0","solid","#ffeda6","#ffffc7","#ffeda6","#ffeda6","#ffffc7","#ccbd84","#ffffc7","#ccbd84","Nuestra Empresa","linea.gif","../images/blank.gif","tiled","tiled");
appendSTMI("false"," Productos ","left","middle","","","-1","-1","0","normal","transparent","#fff0bd","","1","-1","-1","../images/blank.gif","../images/blank.gif","0","0","0","","","_self","Georgia","8pt","#b682a3","normal","normal","none","Georgia","8pt","#990099","normal","normal","none","0","solid","#ffeda6","#ffeda6","#ffeda6","#ffeda6","#ffffc7","#ccbd84","#ffffc7","#ccbd84","","linea.gif","../images/blank.gif","tiled","tiled");
beginSTMB("auto","-90","1","horizontally","arrow_r.gif","0","0","0","4","#ffffff","","tiled","#000000","0","solid","0","Fade","50","0","0","0","0","0","0","4","#b2b2b2","true","#000000","#000000","#000000","complex");
appendSTMI("false","Cuidado diario<BR>","center","middle","","","-1","-1","0","normal","#fff0bd","#fff1c5","","1","-1","-1","../images/blank.gif","../images/blank.gif","-1","-1","0","","http://www.mariaplaz.com/cuidado.html","_self","Georgia","8pt","#b682a3","normal","normal","none","Georgia","8pt","#990099","normal","normal","none","1","solid","#fff0bd","#fff0bd","#fff0bd","#ccbd84","#fff0bd","#fff0bd","#ccbd84","#ffeda6","Productos","","","tiled","tiled");
appendSTMI("false","      SPA     ","center","middle","","","-1","-1","0","normal","#fff0bd","#fff1c5","","1","-1","-1","../images/blank.gif","../images/blank.gif","-1","-1","0","","http://www.mariaplaz.com/spa.html","_self","Georgia","8pt","#b682a3","normal","normal","none","Georgia","8pt","#990099","normal","normal","none","1","solid","#fff0bd","#fff0bd","#fff0bd","#ccbd84","#fff0bd","#fff0bd","#ccbd84","#ffeda6","Productos","","","tiled","tiled");
appendSTMI("false","   Líneas    ","center","middle","","","-1","-1","0","normal","#fff0bd","#fff1c5","","1","-1","-1","../images/blank.gif","../images/blank.gif","-1","-1","0","","http://www.mariaplaz.com/lineas.html","_self","Georgia","8pt","#b682a3","normal","normal","none","Georgia","8pt","#990099","normal","normal","none","1","solid","#fff0bd","#fff0bd","#fff0bd","#ccbd84","#fff0bd","#fff0bd","#ccbd84","#ffeda6","Productos","","","tiled","tiled");
appendSTMI("false"," Accesorios ","center","middle","","","-1","-1","0","normal","#fff0bd","#fff1c5","","1","-1","-1","../images/blank.gif","../images/blank.gif","-1","-1","0","","http://www.mariaplaz.com/accesorios.html","_self","Georgia","8pt","#b682a3","normal","normal","none","Georgia","8pt","#990099","normal","normal","none","1","solid","#fff0bd","#fff0bd","#fff0bd","#ccbd84","#fff0bd","#fff0bd","#ccbd84","#ffeda6","Productos","","","tiled","tiled");
endSTMB();
appendSTMI("false","     News    ","left","middle","","","-1","-1","0","normal","transparent","#fff0bd","","1","-1","-1","../images/blank.gif","../images/blank.gif","-1","-1","0","","http://www.mariaplaz.com/news.html","_self","Georgia","8pt","#b682a3","normal","normal","none","Georgia","8pt","#990099","normal","normal","none","0","solid","#ffeda6","#ffeda6","#fff0bd","#fff0bd","#ffffc7","#ccbd84","#ffffc7","#ccbd84","Noticias","linea.gif","../images/blank.gif","tiled","tiled");
appendSTMI("false","  Contacto  ","left","middle","","","-1","-1","0","normal","transparent","#fff0bd","","1","-1","-1","../images/blank.gif","../images/blank.gif","-1","-1","0","","","_self","Georgia","8pt","#b682a3","normal","normal","none","Georgia","8pt","#990099","normal","normal","none","0","solid","#ffeda6","#ffeda6","#fff0bd","#fff0bd","#ffffc7","#ccbd84","#ffffc7","#ccbd84","","linea.gif","../images/blank.gif","tiled","tiled");
beginSTMB("auto","-90","1","horizontally","arrow_r.gif","0","0","0","3","#ffffff","","tiled","#000000","0","solid","0","Normal","50","0","0","0","0","0","0","4","#b2b2b2","true","#000000","#000000","#000000","complex");
appendSTMI("false","Formar parte","center","middle","","","-1","-1","0","normal","#fff0bd","#fff1c5","","1","-1","-1","../images/blank.gif","../images/blank.gif","-1","-1","0","","http://www.mariaplaz.com/formar_parte.html","_self","Georgia","8pt","#b682a3","normal","normal","none","Georgia","8pt","#990099","normal","normal","none","1","solid","#fff0bd","#fff0bd","#fff0bd","#ccbd84","#fff0bd","#fff0bd","#ccbd84","#ffeda6","Contacto","","","tiled","tiled");
appendSTMI("false","  Formulario  ","center","middle","","","-1","-1","0","normal","#fff0bd","#fff1c5","","1","-1","-1","../images/blank.gif","../images/blank.gif","-1","-1","0","","http://www.mariaplaz.com/contacto.php","_blank","Georgia","8pt","#b682a3","normal","normal","none","Georgia","8pt","#990099","normal","normal","none","1","solid","#fff0bd","#fff0bd","#fff0bd","#ccbd84","#fff0bd","#fff0bd","#ccbd84","#ffeda6","Contacto","","","tiled","tiled");
endSTMB();
endSTMB();
endSTM();
//-->
</script>

linea 181 del archivo stm31.js, posiblemente