function checkForm(form)
  {
   if(form.name.value == '') {
      alert("Please enter your name");
      form.name.focus();
      return false;
    }
	
	 if((form.emailaddress.value.length < 9) || (form.emailaddress.value.indexOf('@') == -1) || (form.emailaddress.value.indexOf('.') == -1)) {
      alert("Please enter a valid email address");
	  	form.emailaddress.focus();
  	  return false;
	}
	
	 if(form.subject.value == '') {
      alert("Please enter a subject to your message");
      form.subject.focus();
      return false;
    }
	
	 if(form.message.value == '') {
      alert("Please enter your message");
      form.message.focus();
      return false;
    }
  
   return true;
  }