function clean(object) {
		switch (object.value) {
			case " ":
				object.value = "";
				object.style.color = "#FFFFFF";
				break;
				
			case "nombre":
				object.value = "";
				object.style.color = "#FFFFFF";
				break;
				
			case "empresa":
				object.value = "";
				object.style.color = "#FFFFFF";
				break;
				
			case "web":
				object.value = "";
				object.style.color = "#FFFFFF";
				break;
				
			case "email":
				object.value = "";
				object.style.color = "#FFFFFF";
				break;
				
			case "telf":
				object.value = "";
				object.style.color = "#FFFFFF";
				break;
				
			case "comentario":
				object.value = "";
				object.style.color = "#FFFFFF";
				break;
			case "marqueting buscadores":
				object.value = "";
				object.style.color = "#999999";
				break;
		}
}

function comproba(object) {
	if (object.value == "") {
		if (object.name == "Expresiones") {
			object.value = "marqueting buscadores";
			object.style.background = "#FFFFFF";
			object.style.color = "#999999";
		}else{
			object.value = object.name;
			object.style.background = "#FFFFFF";
			object.style.color = "#666666";
		}
	}
	
}