function load_casa()
{
	sel=document.getElementById("casasel");
	casa=sel.options[sel.selectedIndex].value;
	this.location.href='casa_metodos+casa-'+casa+'.html';
}
function showinfo(ele)
{
	metd=document.getElementById(ele);
	if(metd.style.display=='none')
		metd.style.display='block';
	else
		metd.style.display='none';
}