function show(num)
{
	var s_block = 'left_hide_'+num;
	var s_button_close = 'left_close_'+num;
	var s_button_see = 'left_see_'+num;

	if(document.getElementById(s_block).style.display=='')
	{
		document.getElementById(s_block).style.display='none';
		document.getElementById(s_button_close).style.display='none';
		document.getElementById(s_button_see).style.display='';
	}
	else
	{
		document.getElementById(s_block).style.display='';
		document.getElementById(s_button_close).style.display='';
		document.getElementById(s_button_see).style.display='none';
	}
}