function enableText(checked, txtbox) {
	txtbox.disabled = !checked ;
	if (!checked) {
		txtbox.value = "";
	}
	else {
		txtbox.focus();
	}
	enableButton();
}

function enableControls(canPutFeria) {
	var strEmplea = document.getElementById('txtEmplea');
	var strFeria = document.getElementById('txtFeria');

	var empleaChk = document.getElementById('empleaChk');
	var feriaChk = document.getElementById('feriaChk');
	 
	var checkEmplea = trim(strEmplea.value) == "";
	var checkFeria = trim(strFeria.value) == "";

	enableText(!checkEmplea, strEmplea);
	enableText(!checkFeria, strFeria);

	empleaChk.checked = !checkEmplea;
	feriaChk.checked = !checkFeria;
	
	var strFeria = document.getElementById('txtFeria');
	feriaChk.disabled = !canPutFeria;
	strFeria.disabled = !canPutFeria || strFeria.disabled;

}

function trim(text) {
	 var trimText = text.replace(/^\s*|\s*$/g,"");
	 return trimText;
}


function enableButton() {
		var strEmplea = document.getElementById('txtEmplea').value;
		var strFeria = document.getElementById('txtFeria').value;
		var btSave = document.getElementById('btSave');
		var empleaChk = document.getElementById('empleaChk');
		var feriaChk = document.getElementById('feriaChk');
		
		var okEmplea = (trim(strEmplea) != "" && empleaChk.checked) || (trim(strEmplea) == "" && !empleaChk.checked);

		var okFeria = (trim(strFeria) != "" && feriaChk.checked) || (trim(strFeria) == "" && !feriaChk.checked);
		btSave.disabled = ! (okEmplea && okFeria);
}

function overmaxchars(text, maxlength) {
alert(text);
alert(maxlength);
	var thetext = text;
	var thelength = thetext.length;
	if (thelength > maxlength) { return true; }
	else { return false; }
}

function setImage(idInput, string) {
    //document.getElementById('prevImage').src = 'File:\/\/' + string;
    //alert(string);
	document.getElementById(idInput).value=string;
}