function show_content(curent,total,id_caseta)
{
	for(i=1;i<=total;i++)
	{
		if(i==1) document.getElementById("clapeta_"+i+"_"+id_caseta).className = "first";
		else if(i==total) document.getElementById("clapeta_"+i+"_"+id_caseta).className = "last";
		else document.getElementById("clapeta_"+i+"_"+id_caseta).className = "";
		document.getElementById("content_"+i+"_"+id_caseta).style.display = "none";
	}
	if(curent==1 && total==1) document.getElementById("clapeta_"+curent+"_"+id_caseta).className = "first last selected";
	else if(curent==1) document.getElementById("clapeta_"+curent+"_"+id_caseta).className = "first selected";
	else if(curent==total) document.getElementById("clapeta_"+curent+"_"+id_caseta).className = "last selected";
	else document.getElementById("clapeta_"+curent+"_"+id_caseta).className = "selected";
	document.getElementById("content_"+curent+"_"+id_caseta).style.display = "";
}