function clean(id){
var objeto;
objeto = document.getElementById(id);
if(objeto.value == 'name:' || objeto.value == 'subject:' || 
   objeto.value == 'email:'	|| objeto.value == 'message:'){
	
	objeto.value = "";
	}
   
}


function VerificarData(){
var nombre = document.getElementById('name');
var email = document.getElementById('email');
var motivo = document.getElementById('subject');
var mensaje = document.getElementById('message');
var reEmail = /\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/;


if (nombre.value == ""){
	name.className = "error";
		return false;
	}

else { name.className = "gris";}


if(!email.value.match(reEmail)){
		email.className = "error";
		email.value = 'Invalid Email!'
		return false;
	}
else { email.className = "gris"; }

if (subject.value == ""){
	subject.className = "error";
		return false;
	}
else { subject.className = "gris";}


if (message.value == ""){
	message.className = "error";
		return false;
	}
		
else { message.className = "gris";}

}