How to show a message box

[reddymade]

I have the following javascript check under my .tpl template file:

I want to show a message box with Ok button, when everything is fine. Saying them a message Now you will receive an email from Us.

	function CheckValid(){
		bp = document.basic_profile;
		if(bp.login.value == ""){
			alert({/literal}'{$err.invalid_login}'{literal}); return;
		}
		if(bp.sname.value == ""){
			alert({/literal}'{$err.invalid_sname}'{literal}); return;
		}
		if(bp.fname.value == ""){
			alert({/literal}'{$err.invalid_name}'{literal}); return;
		}
		if(bp.pass.value == ""){
			alert({/literal}'{$err.invalid_passw}'{literal}); return;
		}
		if(bp.email.value == "" || (bp.email.value != "" && bp.email.value.search('^.+@.+\\..+$') ==-1) ){
			alert({/literal}'{$err.email_bad}'{literal}); return;
		}
		if(bp.pass.value != bp.repass.value){
			alert({/literal}'{$err.pass_eq_repass}'{literal}); return;
		}
		if(bp.pass.value == bp.login.value){
			alert({/literal}'{$err.pass_eq_log}'{literal}); return;
		}
		if(bp.login.value.length<5){
			alert({/literal}'{$err.login_length}'{literal}); return;
		}
		if(bp.pass.value.length<6){
			alert({/literal}'{$err.pass_length}'{literal}); return;
		}
		if(bp.agreed.checked == false){
			alert({/literal}'{$err.term_agreed_err}'{literal}); return;
		}
		document.basic_profile.submit();
	}

thank you very much for the info.

[thorpe]

um.... this is a php board.