image1 = new Image();
image1.src = "/img/m_left.gif";

image2 = new Image();
image2.src = "/img/m_home.gif";

image3 = new Image();
image3.src = "/img/m_home_on.gif";

image4 = new Image();
image4.src = "/img/m_turbos.gif";

image5 = new Image();
image5.src = "/img/m_turbos_on.gif";

image6 = new Image();
image6.src = "/img/m_aplicaciones.gif";

image7 = new Image();
image7.src = "/img/m_aplicaciones_on.gif";

image8 = new Image();
image8.src = "/img/m_prefiltros.gif";

image9 = new Image();
image9.src = "/img/m_prefiltros_on.gif";

image10 = new Image();
image10.src = "/img/m_juntas.gif";

image11 = new Image();
image11.src = "/img/m_juntas_on.gif";

image12 = new Image();
image12.src = "/img/m_catalogos.gif";

image13 = new Image();
image13.src = "/img/m_catalogos_on.gif";

image14 = new Image();
image14.src = "/img/m_herramientas.gif";

image15 = new Image();
image15.src = "/img/m_herramientas_on.gif";

image16 = new Image();
image16.src = "/img/sm_head.gif";


function chkRequiredAdd()
{
	
if (document.tmsearch.tipo.value == "")
	{
		alert("Seleccione el tipo de búsqueda.");
		return false;
	}

if (document.tmsearch.input.value == "")
	{
		alert("Inserte una referencia.");
		return false;
	}

return true;

}