function validateForm(form){
	message = document.getElementById('messagejs');
	message.style.display = 'none';

	if (form.name.value.replace(/^\s\s*/, '').replace(/\s\s*$/, '')=='' || form.name.value.length < 3){
		message.style.display = '';
		message.innerHTML = 'Please type your name.';
		form.name.focus();
		return false;
	}
	
	if (!((/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(form.email.value)))){
		message.style.display = '';
		message.innerHTML = 'Please type a valid email.';
		form.email.focus();
		return false;
	}	
	
	if (form.message.value.replace(/^\s\s*/, '').replace(/\s\s*$/, '')=='' || form.message.value.length < 5){
		message.style.display = '';
		message.innerHTML = 'Please type a message.';
		form.message.focus();
		return false;
	}
	document.getElementById('btnsend').disabled = true;
}

function validateEnter(objeto)
{
	var evento_key = (window.Event)?objeto.which:objeto.keyCode;		
	if (evento_key == 13) validateForm();	
	return;
}