function expandCollapse(anObjId)
{
	var aDivObj = document.getElementById(anObjId);
	var aDivBtn = document.getElementById('btn_'+anObjId);
	if(aDivObj.style.display == 'none')
	{
		aDivObj.style.display = 'block';
		aDivBtn.setAttribute('src','/SAGPyA/_img/abierto.gif');
	}
	else
	{
		aDivObj.style.display = 'none';
        aDivBtn.setAttribute('src','/SAGPyA/_img/cerrado.gif');
	}	
	
}