function display_quastion(div_id){
	if(document.getElementById(div_id).style.display == "none"){
		document.getElementById(div_id).style.display="block";
		document.getElementById('short_'+div_id).style.display="none";
	}
	else{
		document.getElementById(div_id).style.display="none";
		document.getElementById('short_'+div_id).style.display="block";
	}
}