function enviar() {
	document.getElementById("busca").submit();
	return false;
}
function _f(o) {
	o.value=o.value.replace("Pesquise aqui","");
	o.style.fontStyle = "normal";
	o.style.color = "rgb(0,0,0)";
}

function _b(o) {
	if(o.value=="") {
		o.style.fontStyle="italic";
		o.style.color = "#AAAAAA";
		o.value="Pesquise aqui";
	}
}