function validarBusqueda(){
	valor = document.getElementById('q').value;
	if(valor=="" || valor=="búsqueda rápida"){
		alert("Para iniciar la busqueda debe ingresar una o mas palabras");
	}else{
		document.getElementById('buscador').action = "buscar.php";
		document.getElementById('buscador').submit();
	}
}

function limpiarBusqueda(){
	document.getElementById('q').value = "";
}

function popupPrint(theURL,winName,ancho,alto,features) {
 var wleft = (screen.width - ancho)/2
 var wtop = (screen.height - alto)/2 
 if (features==null) {
	 features = "scrollbars=1,fullscreen=0,resizable=0,status=1,toolbar=0,directories=0,location=0,menubar=0,copyhistory=0";
	 }
 window.open(theURL, winName, "width="+ancho+", height="+alto+", "+ features +", top= "+ wtop.toString() +", left="+ wleft.toString());
}