function checkSearchInput(inputId, message) {
	
	var input = document.getElementById(inputId);
	if (input && trimString(input.value).length >= 3) return true;
	else
	{
		window.alert(message);
		return false;
	}
}

function trimString(s) {
	
	var m = s.match(/^\s*(\S+(\s+\S+)*)\s*$/);
    return (m == null) ? "" : m[1];
}

function anyRadioButtonFromListIsChecked(baseId)
{
	var i = 0, rbutton = null;
	for (i = 0; i<99; i++)
	{
		rbutton = document.getElementById(baseId + "_" + String(i));
		if (rbutton && rbutton.checked) return true;
		else if (!rbutton) break;
	}
	return false;
}