function emailform_onsubmit() 
{
   var returnValue = false;
   if (document.emailform.txtName.value == "")
   {
      alert("Please enter your name");
      document.emailform.txtName.focus();
   }
   else if (document.emailform.txtEmail.value == "")
   {
      alert("Please enter your e-mail address");
      document.emailform.txtEmail.focus();
   }
   else if (document.emailform.txtEmail.value.search("@") == -1 || document.emailform.txtEmail.value.search("[.*]") == -1)
	 {
		alert("Please enter a valid email address");
		document.emailform.txtEmail.focus()
	}
   else
   {
      alert("Thank you for using our contact form. We will be contacting you shortly.");
      returnValue = true;
   }
   return returnValue;
}