function mostrar_categorias(valor){
	var total_categ = document.getElementById('total_categ_'+valor).value;
	
	for(a=0;a<total_categ;a++){
		if(document.getElementById(valor+"_"+a).style.display == "inline"){
			document.getElementById(valor+"_"+a).style.display = "none";			
		}else if(document.getElementById(valor+"_"+a).style.display == "none"){
			document.getElementById(valor+"_"+a).style.display = "inline";
		}
	}	
	if(document.getElementById("muestra_"+valor).style.display == "inline"){
		document.getElementById("muestra_"+valor).style.display = "none";
		document.getElementById("oculta_"+valor).style.display = "inline";
		document.getElementById("mos_span_"+valor).style.display = "none";
		document.getElementById("oc_span_"+valor).style.display = "inline";
	}else{
		document.getElementById("muestra_"+valor).style.display = "inline";
		document.getElementById("oculta_"+valor).style.display = "none";	
		document.getElementById("mos_span_"+valor).style.display = "inline";
		document.getElementById("oc_span_"+valor).style.display = "none";
	}
}