// usability
function klickFeld(feld,wert){
	if(feld.value == wert)
	{ feld.value = "";}
}
function verlasseFeld(feld,wert){
	if(feld.value == '')
	{ feld.value = wert; }
}

function toggle(feld){
	$('#'+feld).toggle();
}

function showFeld(feld){
	$('#'+feld).show();
}

function hideFeld(feld){
	$('#'+feld).hide();
}


function foldUp(feld){
	// save height in rel attribute
	var oldheight = $("#"+feld).height();
	$("#"+feld).animate({ height:26 }).addClass('no-print').attr({ rel: oldheight } );
	$("#"+feld+"-hide").hide();
	$("#"+feld+"-show").show();
}

function foldDown(feld){
	// get height from rel attribute
	var oldheight = $("#"+feld).attr("rel");
	$("#"+feld).animate({ height:oldheight }).removeClass('no-print');
	$("#"+feld+"-show").hide();
	$("#"+feld+"-hide").show();
}

function favIt(richtlinie,superkat,kat,subkat,typ,uid,feld){
	/*alert("R:" + richtlinie + 
		  "SuperK:"+ superkat +	
		  "K:"+ kat +	
		  "SubK:"+ subkat +	
		  "T:"+ typ +
		  "UID:"+ uid +
		  "FELD:"+ feld
		  );
	*/
	$.ajax({
   		type: "POST",
   		url: "http://www.environlex.com/environlex.php",
   		data: "r="+richtlinie+"&sk="+superkat+"&k="+kat+"&subk="+subkat+"&typ="+typ+"&uid="+uid,
   		success: function(msg){
     		if (msg == "ok"){
				// icon wechseln
				setFavIcon(feld);
			} else {
				// fehler
				alert(msg);	
			}
		}
 	});
}

function setFavIcon(feld){
	if ($("#"+feld).hasClass('set-fav-on')){					 
		$("#"+feld).removeClass('set-fav-on');
		$("#"+feld).addClass('set-fav-off');
	} else {
		$("#"+feld).removeClass('set-fav-off');
		$("#"+feld).addClass('set-fav-on');
	}
}