function showHideRaquo(target, method)
{
	var Target = document.getElementById(target);
	Target.style.visibility = method;
	return;
}

function createHideRaquo(target, method)
{
	var Target = document.getElementById(target);
	Target.style.display = method;
	return;
}

function isUnsignedInteger(s) {
return (s.toString().search(/^[0-9]+$/) == 0);
}