window.addEvent('domready', function(){
	$('chkEstimate').addEvent('click', function(){
		$('txtPercentItLoad').set("disabled", "");
        $('txtNoServers').set("disabled", "");
        $('txtItLoad').set("disabled", "disabled");
	});
	
	$('chkActual').addEvent('click', function(){
		$('txtPercentItLoad').set("disabled", "disabled");
        $('txtNoServers').set("disabled", "disabled");
        $('txtItLoad').set("disabled", "");
	});
});