function visible_hidden(id) {
	var element;
	element = document.getElementById(id);
	element.style.visibility=='hidden' ? element.style.visibility='visible' : element.style.visibility='hidden';
}
function visible_hidden_2(id_element, value_element, id) {
	var element;
	element = document.getElementById(id);
	if (document.getElementById(id_element).value==value_element) {
		element.style.visibility='visible';
	}
	else {
		element.style.visibility='hidden'
	}
}
function visible_hidden_03(id_input, id_div1, id_div2) {
	var idinput = document.getElementById(id_input);
	var iddiv1 = document.getElementById(id_div1);
	var iddiv2 = document.getElementById(id_div2);
	if (idinput.value.length>0) {
		iddiv1.style.visibility='visible';
		iddiv2.style.visibility='visible';
	}
	else {
		iddiv1.style.visibility='hidden';
		iddiv2.style.visibility='hidden';
	}
}