var classAttribute = (document.all) ? "className" : "class";

function manageLayer(layer){
	if(document.getElementById(layer).style.display == "block" || document.getElementById(layer).style.display == ""){
		document.getElementById(layer).style.display = "none";
	}else{
		document.getElementById(layer).style.display = "block";
	}		
}


function checkMandatoryFields(){
	returnValue = true;
	fields = document.getElementsByTagName("form")[0].getElementsByTagName("input");
	checkFieldArray(fields);
	fields = document.getElementsByTagName("form")[0].getElementsByTagName("textarea");
	checkFieldArray(fields);
	
	if(!returnValue){
		document.getElementById('error').innerHTML = "Bitte alle Pflichtfelder ausfüllen.";
	}
	return returnValue;
}

function checkFieldArray(fields){
	for(var i=0; i<fields.length; i++){
		if(fields[i].value == "" && fields[i].getAttribute(classAttribute) == "mandatory"){
			fields[i].style.border = "1px solid red";
			returnValue = false
		}else{
			fields[i].style.border = "1px solid #606060";
		}
	}
}

function showInfos(nr){
	items = document.getElementById('physioContent').getElementsByTagName("div");	
	for(var i=0; i<items.length; i++){
		items[i].style.display = "none";
	}
	items[nr].style.display = "block";
}

function showVR(divId){
	var divs = document.getElementById('vrRight').getElementsByTagName("div");
	for(var i=0; i<divs.length; i++){
		divs[i].style.display = "none";
	}
	document.getElementById(divId).style.display = "block";
}