function showhide(what)
{
	hideAll();
	
	switch (what){
	case "block-escuelas":
	obj = "escuelas";
	break;
	case "block-docentes":
	obj = "docentes";
	break;
	case "block-directores":
	obj = "directores";
	break;
	}
	
	document.getElementById(what).style.display='block';
	document.getElementById(obj).src="http://tintafresca.ttcampus3.com/campus/img_home/tag_"+obj+".gif";

	
}

function hideAll(){
	document.getElementById('block-escuelas').style.display = 'none';
	document.getElementById('escuelas').src='http://tintafresca.ttcampus3.com/campus/img_home/tag_escuelas_dim.gif';
	document.getElementById('block-docentes').style.display = 'none';
	document.getElementById('docentes').src='http://tintafresca.ttcampus3.com/campus/img_home/tag_docentes_dim.gif';
	document.getElementById('block-directores').style.display = 'none';
	document.getElementById('directores').src='http://tintafresca.ttcampus3.com/campus/img_home/tag_directores_dim.gif';
}