var ample=600;
		var alt=500;
		var imgs = new Array();
		
		function crea_img(num, foto){
			imgs[num] = new Image();
			imgs[num].src= 'ambients/img/'+foto;
			
		}
		function open_poupu(id,num){
			ample = imgs[num].width; //Ancho;
			alt = imgs[num].height; //Alto;
			lefts=(screen.width-ample)/2; //centrar ventana horizontalmente
			tops=(screen.height-alt)/2.5; 
			window.open('sola.php?id='+id, "popup_inici", 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0, width='+ample+',height='+alt+',left='+lefts+', top='+tops); 
		}
		
		function redimens(id,foto){
		
			img = new Image();
			img.src= 'ambients/img/'+foto;
			ample = img.width; //Ancho;
			alt = img.height; //Alto;
			lefts=(screen.width-ample)/2; //centrar ventana horizontalmente
			tops=(screen.height-alt)/2.5;
			window.name = "actual";
			window.open('sola.php?id='+id, "popup_inici", 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0, width='+ample+',height='+alt+',left='+lefts+', top='+tops); 
			window.close("actual");
		}