function abre_fecha(id){
	if(document.getElementById(id+"_div").style.display == "block"){
		document.getElementById(id+"_td").className = "off";
		document.getElementById(id+"_lnk").style.fontWeight = "normal";
		document.getElementById(id+"_div").style.display = "none";
	}
	else{
		document.getElementById(id+"_td").className = "on";
		document.getElementById(id+"_lnk").style.fontWeight = "bold";
		document.getElementById(id+"_div").style.display = "block";
	}
}