 <!--Form Validation script -->

    function validate() {
     
      var errStr = "Please complete the following fields before continuing:\n\n";
      var valid = true;  // innocent until proven guilty
    
      form=document.registration;	
      
      if (isNull(form.YourName.value)){
        errStr += '\tYour Name\n';
        valid = false;
      }
      
      if (isNull(form.mailfrom.value)){
        errStr += '\tYour Email\n';
        valid = false;
      }
          
      if (isNull(form.schoolName.value)){
        errStr += '\tSchool Name\n';
        valid = false;
      }
    
      if (isValueSelected(form.grade.options[form.grade.selectedIndex].value)){
        errStr += '\tGrade\n';
        valid = false;
      }
      
      if (isNull(form.suggestions.value)){
        errStr += '\tSuggestions\n';
        valid = false;
      }
      
      if (!valid) {
        alert(errStr);
      }else{
        
        if (isEmail(form.mailfrom.value)){
          alert("Enter Valid Email Address");
          return false;
        }
       }//else  
     return valid;
    }