How to run two javascripts on submittion of form?

Experts,

I am using one form in which I run the first script below when a user clicks the submit button via a 'onclick' event. I run the second script via an 'onsubmit' event in the <form> tag.

I want the first script to run, then only if no alerts are thrown, I want to run the second script.

This is my first script which I am calling via an 'onclick' event when someone presses the submit button:

<script type="text/javascript">
function verifyAction(){
  if(document.getElementById("nuid").value==""){
        alert(\'Please fill in the NUID field.\');
        return false;
  }
  if(document.getElementById("firstname").value=="NUID already in use."){
        alert(\'Please provide a valid NUID before continuing.\');
        return false;
  }       
  if(document.getElementById("firstname").value=="NUID not in employee database."){
        alert(\'Please provide a valid NUID before continuing.\');
        return false;
  }
}
</script>

If the script above does not return an alert, I'd like to call the following script. I currently am running this in the <form> tag via and 'onsubmit' event.:

gotoStep2 = function(){ // Updates the contents of a div
  var url = 'scripts/users.php';
  var pars={cmd:'users', step:'2'};
  new Ajax.Updater('steps', url, {method:'get', parameters: pars});
}