// Init elements
function $$ () {
	var elements = new Array();
	for (i = 0; i < arguments.length; i++) {
		element = (typeof arguments[i] == 'string') ? document.getElementById(arguments[i]) : arguments[i];
		if (arguments.length == 1) return element;
		elements.push(element);
	}
	return elements;
}

function toggleDiv(status, divEl) {
	$$(divEl).style.display = (status) ? 'block' : 'none';
}

function changeDiv (show, hide, model) {
	$$(hide).style.display = 'none';
	$$(show).style.display = model;
}