function hide(num, total)
{
	var div	= document.getElementById('pr_'+num);
	var h	= document.getElementById('h_' +num);
	div.className = div.className == "hide" ? "show" : "hide";
	h.className   = h.className   == "hide" ? "show" : "hide";
	for (var i=1; i<=total; i++)
	{
		if (i!=num)
		{
			document.getElementById('pr_'+i).className = "hide";
			document.getElementById('h_' +i).className = "hide";
		}
	}
	
	
}