// utility functions

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

	return elements;
}

function refreshVerifyImg(imgId)
{
	var imgControl = $(imgId);
	imgControl.src = "http://verify.tenpay.com/getimage?" + Math.random() + "\"";
}