function mostraOculta(nom){
	if(document.getElementById(nom).style.visibility=="hidden"){
		document.getElementById(nom).style.visibility="visible";
		document.getElementById(nom).style.display="block";
	}else{
		document.getElementById(nom).style.visibility="hidden"
		document.getElementById(nom).style.display="none";
	}	
}

function barra(texte){
	window.location=texte;
}

function finestra(plana,titol,alt,ample){
	esq=(window.screen.width/2) - ample/2;
	dalt=(window.screen.height/2) - alt/2;
	window.open(plana,titol,"menubar=no,resizable=no,location=no,status=no,width="+ample+",height="+alt+",top="+dalt+",left="+esq);
}

function finestra2(plana,titol,alt,ample){
	esq=(window.screen.width/2) - ample/2;
	dalt=(window.screen.height/2) - alt/2;
	window.open(plana,titol,"menubar=yes,resizable=no,location=no,status=no,width="+ample+",height="+alt+",top="+dalt+",left="+esq);
}