function changeListLimit(value)
{
	var s = document.location.search;
	if (value.length==0)
		s = vacumParam(s,"_limit",value);
	else
		s = insertParam(s,"_limit",value);
	if (s != document.location.search) document.location.search=s;
}

function change_active_image_button(element)
{
	var contener = $('active_button');
	var old_b = $(contener.value);
	var new_b = $(element);
	old_b.className = 'item';
	new_b.className = 'item active';
	contener.value = new_b.id;
}