function nav_bar(pane)
{
  if(pane==1)
  {
    document.getElementById("pane1").style.display = "block";
    document.getElementById("pane2").style.display = "none";
    document.getElementById("pane3").style.display = "none";
  }
  else if(pane==2)
  {
    document.getElementById("pane1").style.display = "none";
    document.getElementById("pane2").style.display = "block";
    document.getElementById("pane3").style.display = "none";
  }
  else
  {
    document.getElementById("pane1").style.display = "none";
    document.getElementById("pane2").style.display = "none";
    document.getElementById("pane3").style.display = "block";
  }
}

function validate(form_id)
{
  var frm = document.getElementById(form_id);
  
  switch(form_id)
  {
    case "major_search":
      var zip = frm.zipcode.value;
          zip = zip.replace(/^\s*/,'');
          zip = zip.replace(/\s*$/,'');
      
      if(!zip || zip.match(/[^A-Za-z0-9-]/))
      {
        alert('Please enter Valid ZIP code.')
        frm.zipcode.focus();
      }
      return(true);
      break;

    case "name_search":
      var name_search = frm.namesearch.value;
          name_search = name_search.replace(/^\s*/,'');
          name_search = name_search.replace(/\s*$/,'');

      if(name_search.length == 0)
      {
        alert('Please enter all or part of the School Name.');
        frm.namesearch.focus();
      }
      else if(name_search.length < 4)
      {
        alert('Your Search must be more than 3 chars.');
        frm.namesearch.focus()
      }
      return(true);
      break;
  }
  return false;
}