var imagen = '';
var tituloi = '';
var extrasi = '';
var anchoi = 780;
var altoi = 700;
var galeria_obras = null;
function abrir_img(im,ti,ex){
	imagen=im;
	tituloi=ti;
	extrasi=ex;
	features = ",type=fullWindow,status=no,scrollbars=yes,top=0,left=0,resizable=yes";
	var Pantalla=(screen.width);
	if (Pantalla<1024){
	features = "width=740,height=540"+features;
	obras = window.open("../obra/jpg_spot.htm","obras",features)
	}else{
	features = "width="+anchoi+",height="+altoi+features;
	obras = window.open("../obra/jpg_spot.htm","obras",features)}
}