function esconde_anuncio(divId)
{ 
	if (document.layers) document.layers['pop'].visibility = 'hide';
	else if (document.all) document.all['pop'].style.visibility = 'hidden';
	else if (document.getElementById) document.getElementById('pop').style.visibility = 'hidden';
}

function mostrar_anuncio(divId)
{ 
	state=typeof topPos;
	if(state=='undefined') topPos=-260;
	if(topPos < 75)
	{ topPos+=3;
		if (document.layers) document.layers['pop'].top = topPos;
		else if (document.all) document.all['pop'].style.top = topPos;
		else if (document.getElementById) document.getElementById('pop').style.top = topPos;
		
		setTimeout("mostrar_anuncio('pop');",25);
	}
}