var boxmain = new Array('filter1', 'filter2', 'filter3', 'filter4');
var show_panel = '';
function Boxmain(p)
{
	var i, e, t;

	if (typeof(p) == 'string')
	{
		show_panel = p;
	}

	for (i = 0; i < boxmain.length; i++)
	{
		document.getElementById(boxmain[i]+ '-desc').className='right_f hide';
		document.getElementById(boxmain[i]).className='passive';
		document.getElementById(boxmain[i]+ '-span').style.display = 'block';
	}
	document.getElementById(show_panel+ '-desc').className='right_f show';
	document.getElementById(show_panel+ '-span').style.display = 'none';
	document.getElementById(show_panel).className= show_panel+'-active';
}