Variante mit Iframe und PopUp !!
:o)))
<html><head><title></title>
<script language="javascript">
function auswaehlen (a)
{
if (a=="nothing")
{
document.forms[0].reset();
document.forms[0].elements[0].blur();
return;
}
else if (a=="selfHTML")
{
win=window.open ("http://forum.de.selfhtml.org","jawolloh","scrollbars=no,width=700,height=500,left=0,top=0");
win.focus();
document.forms[0].reset();
document.forms[0].elements[0].blur();
}
else
{
parent.frames[0].location.href=a; // Hier Ziel-Frame oder location eintragen !!
document.forms[0].reset();
document.forms[0].elements[0].blur();
}
}
</script>
<body>
<form>
<select name="menu" onChange="auswaehlen (this.form.menu.options[this.form.menu.options.selectedIndex].value)">
<option selected value="javascript:void()">Auswahlliste
<option value="nothing">
<option value="http://www.google.de">Google</option>
<option value="selfHTML">selfHTML</option>
<option value="http://www.altavista.de">Alta vista</option>
</select>
</form>
<br><br><iframe src="" width="400" height="500" frameborder="1" scrolling="auto"></iframe>
</body><html>