function validateForm (theForm)
{
   // Create an empty string to hold the error messages.
   errorString = '';
   
   // Each time there's an error, add an error message
   if(IsEmpty(theForm.first_name))
   {
      errorString += '<li>Please provide your first name.</li>';
      theForm.first_name.style.border="1px solid red";
   }
   else
      theForm.first_name.style.border="";
   

   if(IsEmpty(theForm.last_name))
   {
      errorString += '<li>Please provide your last name.</li>';
      theForm.last_name.style.border="1px solid red";
   }
   else
      theForm.last_name.style.border="";
   

   if(! validEmail(theForm.email.value))
   {
      errorString += '<li>Please provide a valid email address.</li>';
      theForm.email.style.border="1px solid red";
   }
   else
      theForm.email.style.border="";
   

   if(IsEmpty(theForm.phone))
   {
      errorString += '<li>Please provide your phone number.</li>';
      theForm.phone.style.border="1px solid red";
   }
   else
      theForm.phone.style.border="";
   

   if(IsEmpty(theForm.address))
   {
      errorString += '<li>Please provide your address.</li>';
      theForm.address.style.border="1px solid red";
   }
   else
      theForm.address.style.border="";
   

   if(IsEmpty(theForm.present_institution))
   {
      errorString += '<li>Please provide your present institution.</li>';
      theForm.present_institution.style.border="1px solid red";
   }
   else
      theForm.present_institution.style.border="";
  

   if(IsEmpty(theForm.phd_institution))
   {
      errorString += '<li>Please provide your Ph.D. institution.</li>';
      theForm.phd_institution.style.border="1px solid red";
   }
   else
      theForm.phd_institution.style.border="";
   
   //Check document collection
   for ( var i=0; i< theForm.elements['documents[]'].length; i++ )
   {
      label = document.getElementById('documents_label_' + i);

      if ( IsEmpty(theForm.elements['documents[]'][i]) )
      {
         label.style.color="red";
         errorString += "<li>A required document attachment is missing.</li>";
      }
      else
         label.style.color="";
   }

   //Check publication collection
   var required = 0;
   var notEmpty = 0;

   pubColl = document.getElementsByName('publication_files[]');

   for ( var i=0; i< pubColl.length; i++ )
   {
      if ( ! IsEmpty( pubColl[i] ) )
         notEmpty++;
   }
   if ( notEmpty < required )
      errorString += "<li>At least " + required + " publications are required.</li>";


   //Check referee collection
   var required = 3;
   var notEmpty = 0;

   refColl = document.getElementsByName('referee[name][]');

   for ( var i=0; i< refColl.length; i++ )
   {
      if ( ! IsEmpty( refColl[i] ) )
         notEmpty++;
   }
   if ( notEmpty < required )
      errorString += "<li>At least " + required + " referee is required.</li>";


   // If the error string is empty, there were no errors.
   if ( errorString == '') 
   {
      // Form processing
      theForm.flag.value = "true";
      
      return true;
   }
   else
   {
      // The error string had something in it
      
      errorString = "<p>Please check the following and try again:<ul>" + errorString + "</ul></p>";
      
      oFormError = document.getElementById("form_error");
      
      oFormError.innerHTML = errorString;
      
      oFormError.style.display = "block";

      window.scrollTo(0,0);

      theForm.flag.value= "false";
      
      return false;
   }
}