// JavaScript Document
function show(id)
{
	var q_id = "q"+id;
	var ans_id = "a"+id;
	var obj = document.getElementById(ans_id).style;
		
	if(!obj.display)
	{
		obj.display = 'none';
		document.getElementById(q_id).className='link';
	}
    else
	{
        obj.display = ''; 
		document.getElementById(q_id).className='link_sel';		
	}	
}