function formUserCheck(formobj){
	var error = false;
	// Enter name of mandatory fields
	var fieldRequired = Array("fastemail", "fastinfo");
	// Enter field description to appear in the dialog box
	var fieldDescription = Array("Twój e-mail", "Pytanie");

	// dialog message
	var alertMsg = "Proszę uzupełnić brakujące dane:\n\n";
	
	var l_Msg = alertMsg.length;
	
	for (var i = 0; i < fieldRequired.length; i++){
		var obj = formobj.elements[fieldRequired[i]];
		if (obj){
			switch(obj.type){
			case "select-one":
				if (obj.selectedIndex == -1 || obj.options[obj.selectedIndex].text == ""){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "select-multiple":
				if (obj.selectedIndex == -1){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "text":
			case "password":
			case "textarea":
				if (obj.value == "" || obj.value == null){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			default:
			}
			if (obj.type == undefined){
				var blnchecked = false;
				for (var j = 0; j < obj.length; j++){
					if (obj[j].checked){
						blnchecked = true;
					}
				}
				if (!blnchecked){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
			}
		}
	}

	if (alertMsg.length == l_Msg){
		return true;
	}else{
		alert(alertMsg);
		error = true;
	}
	if (error)
	{
	hide_field('sendloading');
	return false;
	}
}

function doSection (secNum)
	{
	el = document.getElementById(secNum);	
	//doSection odpowiada za rozwijanie obszaru
	if (el.style.display=="none")
		{
		el.style.display="";
		}
	else
		{
		el.style.display="none";
		}
	}

function show_field( field_id )
{
    el = document.getElementById(field_id);
    el.style.display = 'block';
}

function hide_field( field_id )
{
    el = document.getElementById(field_id);
    el.style.display = 'none';
}


function clear_data_field( obj )
{
    
    if ( obj.value == 'YYYY-MM-DD' )
        obj.value = '';
}

function init_page()
{
  hide_field( 'article_text_en' );
  hide_field( 'article_text_de' );
}