function preloadImages()
{
	var args = preloadImages.arguments;
	var imgArgs = new Array(args.length);

	for(i=0; i<args.length; i++)
	{
		imgArgs[i] = new Image();
		imgArgs[i].src = args[i];
	}
}

function email_check(email)
{
	re = /^[\-_a-z\.A-Z0-9]+@[\-_a-z\.A-Z0-9]+$/;
	if(!re.test(email))
	{
		alert("Please enter valid e-mail address");
		return false;
	}

	return true;
}