function checkForm(form)
  
  {
    // check for 'blank' input
    if(form.field13623456.value == '') {
      alert("Name is required.");
      form.field13623456.focus();
      return false;
    }
	
	// regular expression to match alphanumeric characters and spaces
    var re = /^[\w\- ]+$/;
    
    // compare input to regular expression
    if(!re.test(form.field13623456.value)) {
      alert("Please enter a valid name.");
      form.field13623456.focus();
      return false;
    }

    
		
	// Email Address
	
	if(form.field13623457.value == '') {
      alert("Email Address required.");
      form.field13623457.focus();
      return false;


	}  // regular expression to match alphanumeric characters and spaces
     var re = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
    
    // compare input to regular expression
    if(!re.test(form.field13623457.value)) {
      alert("Please provide a valid email address!");
      form.field13623457.focus();
      return false;
    
	} 
	
	
// check for 'blank' input
    if(form.field13623458.value == '') {
      alert("Topic is required.");
      form.field13623458.focus();
      return false;
    }
	
		
	
	
	
     // allow form to be submitted
    return true;
  }