$('textarea').on('keypress change blur',function(e)
{
	var tval = $('textarea').val(),
		tlength = tval.length,
		set = 250, // max chars number
		remain = parseInt(set-tlength);
	$('.remain').text(remain);
	if (remain<=0 && e.which!==0 && e.charCode!==0)
		$('textarea').val((tval).substring(0,tlength-1))
})