/* ampliacions de fotos en fotos.php */
function amplia_foto(numfoto) {
	fotoampliada = "arxius/foto".concat(numfoto,"_ampliar.jpg");
	document.getElementById("ampliacio").getElementsByTagName("img")[0].src = fotoampliada;
}

/* seleccio en el menu i en el submenu */
function menu(a) {
		document.getElementById(a).className="selected";
}

function reset_submenu(div) {
	divs = document.getElementById("fitxa").getElementsByTagName("div");
	for (i=0; i<divs.length; i++) divs[i].className="hidden";
	as = document.getElementById("submenu").getElementsByTagName("a");
	for (i=0; i<as.length; i++) as[i].className="normal";
	set_submenu(div);
}
	
function set_submenu(div) {
	document.getElementById(div).className="visible";
	a = "a_"+div;
	document.getElementById(a).className="selected";
}

/* mostra finestres per definir paraules especialitzades */
function getScrollXY() {
	var scrOfX = 0, scrOfY = 0;
	if( typeof( window.pageYOffset ) == 'number' ) { //Netscape compliant
		scrOfY = window.pageYOffset;
		scrOfX = window.pageXOffset;
	} else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) { //DOM compliant
		scrOfY = document.body.scrollTop;
		scrOfX = document.body.scrollLeft;
	} else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) { //IE6 standards compliant mode
		scrOfY = document.documentElement.scrollTop;
		scrOfX = document.documentElement.scrollLeft;
	}
	return [scrOfX,scrOfY];
}

function mostra_finestra(elem,event) {
	mou_finestra(elem,event);
	document.getElementById(elem).style.visibility = "visible";
}

function mou_finestra(elem,event) {
	var scroll = getScrollXY();
	var x = event.clientX + scroll[0];
	var y = event.clientY + scroll[1];
	document.getElementById(elem).style.left = x + "px"; // si no afegeixo "px" no funciona en mozilla
	document.getElementById(elem).style.top = y + 10 + "px";
}

function amaga_finestra(elem) {
	document.getElementById(elem).style.visibility = "hidden";
}