Event.observe(window, 'load', function() {
  Event.observe('criteria','submit',function(){	
  new Ajax.Request('mail.php',
	  {
	    method:'POST',
	    parameters: $('criteria').serialize(true),
	    onSuccess: function(transport){
	      var response = transport.responseText || "no response text";
	      showBox(response);
	    },
	    onFailure: function(){ alert('Something went wrong...') }
	  }); 
	  return false;
  });
  
	Event.observe('message','click',function(){
		if($('message').value == "Message"){
			$('message').value='';
		}
	});

	Event.observe('email','click',function(){
	if($('email').value== 'E-mail'){
		$('email').value='';
	}
	});
	
	Event.observe('ime','click',function(){
	if($('ime').value== 'Name'){
		$('ime').value='';
	}
	});
});

function showBox(response) {
		$('notice_layer').update(response);
		$('criteria').reset();   
		$('notice_layer').style.display="block";
		return false;
}