function znikanie() {
	var p = document.getElementById('adv_search_div');
	var l = document.getElementById('adv_search_l');
	
	if (p.style.display == 'none') {
		p.style.display = 'block';
		l.style.display = 'none';
	} else {
		p.style.display = 'none';
		l.className = 'rollOn';
	}
}
function clear_area(c_var, val1, val2)
{
	if (c_var.value == val1)
		c_var.value = val2;
}