I found something for cPanel:
CODE
<script language="javascript">
function cpLogin(form) {
var username = form.username.value;
var password = form.password.value;
var server = form.server.value;
if (username && password && server) {
var cpanel = "https://" + username + ":" + password + "@" + server + ":2083/";
var newWindow = window.open(cpanel,'cpanel','top=0,left=0, scrollbars=yes');
} else {
alert("Please enter your domain name, username and password.");
}
}
</script>
<form name="login">
<input type="text" name="server" maxlength="65" size="25" value="">
<input type="text" name="username" maxlength="65" size="15" value="">
<input type="password" maxlength="65" size="15" name="password">
<input type="button" value="Login" onClick="cpLogin(this.form)">
</form>
Seems to work. All I need now is email.