function showcoment(elemid){
	link_=elemid+"_a";
	div_=elemid+"_div";
	document.getElementById(link_).style.display="none";
	document.getElementById(div_).style.display="block";
}

function hidecoment(elemid){
	link_=elemid+"_a";
	div_=elemid+"_div";
	document.getElementById(link_).style.display="block";
	document.getElementById(div_).style.display="none";
}