// JavaScript Document
function readme(question)
{
	var question_item = document.getElementById('q'+question);
	var answer_item = document.getElementById('a'+question);
	var link_item = document.getElementById('l'+question);
	
	//close the selected element (set '+')
	if (answer_item.style.display == 'block')
	{
		answer_item.style.display='none';
		link_item.style.fontWeight='normal';
		question_item.style.borderTop='0px';
		link_item.style.color='#F60';
	}
	else
	//open the selected element (set '-') and close all others (set '+')
	{
		var answer_count = document.getElementsByTagName('dd').length;
		for(var i = 1; i <= answer_count; i++) 
		{
			document.getElementById('a'+i).style.display='none';
			document.getElementById('q'+i).style.borderTop='0px';
			document.getElementById('l'+i).style.fontWeight='normal';
			document.getElementById('l'+i).style.color='#F60';
		}
		answer_item.style.display='block';	
		link_item.style.fontWeight='bold';
		question_item.style.borderTop='1px solid #cdc5d9';
		link_item.style.color='#306';
	}
}