function validForm(){
	var form = document.getElementById('formVlozit');
        var datum = form.elements["datum"];
        var nadpis = form.elements["nadpis"];
        var text = form.elements["text"];
        tinyMCE.triggerSave();
 if(formEmpty(datum)){if(formEmpty(nadpis)){if(formEmptyText(text,'Text akce je prázdný')){return true;}}}
 
	return false;
}

 
function formEmpty(elem){
	var alphaExp = /^./;
	if(elem.value.match(alphaExp)){
		return true;
	}else{
    elem.setAttribute('class', 'errorForm' );
		elem.focus();
		return false;
	}
}

function formEmptyText(elem, text){
	var alphaExp = /^./;
	if(elem.value.match(alphaExp)){
		return true;
	}else{
    alert(text);
		return false;
	}
}


function sheckBox(elem, helperMsg){
	if(elem.checked == false ){
		alert(helperMsg);
		elem.focus(); // set the focus to this input
		return false;
	}
	return true;
}


function  formNumber (elem){
	var emailExp = /^[0-9]{10}$/;
	if(elem.value.match(emailExp)){
		return true;
	}else{
    elem.setAttribute('class', 'errorForm' );
    alert('Neplatné číslo');
    elem.focus();
		return false;
	}
}


function  formEmail (elem){
	var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
	if(elem.value.match(emailExp)){
		return true;
	}else{
    elem.setAttribute('class', 'errorForm' );
    alert('Neplatný e-mail!');
    elem.focus();
		return false;
	}
}