var finestra;
function obre_finestra(a,f,x,y){
	for(i = 0; i < f.taula.length; i++) { 
		if (f.taula[i].checked) {
			ventana(a + '.php?taula=' + f.taula[i].value, "ini", x, y);
			return;
		}
	}
	alert("No has seleccionat cap grup de productes");
}

function tanca_filla(){	//Se utiliza porque IE no admite el parámetro dependent=yes
	finestra.close();
}

function ventana(enlace,v,ancho,alto){
	var x=(screen.availWidth-ancho-20)/2;
	var y=(screen.availHeight-alto-20)/2;
  finestra=window.open(enlace,v,"dependent=yes,titlebar=no,left="+x + ",top="+y + ",height="+alto + ",width="+ancho);
}

function carga_categories(loc,q){
	document.location = loc + "?taula=" + q.taula.value + "&nom=" + q.nom.value + "&preu=" + q.preu.value + "&text=" + q.text.value;
}