<script>
var browserName=navigator.appName;
if (browserName=="Netscape")
{
function closeme()
{
window.open('','_parent','');
window.close();
}
}
else
{
if (browserName=="Microsoft Internet Explorer")
{
function closynoshowsme()
{
window.opener = "whocares";
window.close();
}
}
}
</script>
<input type="button" value="close me 3" onclick="closeme();"/>