function _cursor(objekt){
	if(navigator.appVersion.substring(22,23) == "5"){
		objekt.style.cursor='hand';
	}else{
		objekt.style.cursor='pointer';
	}
}


function _plus(objekt,vp){
	var inhalt = document.getElementsByName(objekt)[0].value;
	var max = 999-Number(vp);
	if (inhalt <= max){
		var neu = Number(inhalt)+Number(vp);
		document.getElementsByName(objekt)[0].value = neu;
	}
}

function _minus(objekt,vp){
	var inhalt = document.getElementsByName(objekt)[0].value;
	var min = 1+Number(vp);
	if (inhalt >= min){
		var neu = Number(inhalt)-Number(vp);
		document.getElementsByName(objekt)[0].value = neu;
	}
}

function _tree(menuetree){
	if(document.getElementById("d"+menuetree).style.display == 'none'){
		document.getElementById("d"+menuetree).style.display = 'block';
		document.getElementById("plus"+menuetree).style.display = 'none';
		document.getElementById("minus"+menuetree).style.display = 'inline';
	}else{
		document.getElementById("d"+menuetree).style.display = 'none';
		document.getElementById("plus"+menuetree).style.display = 'inline';
		document.getElementById("minus"+menuetree).style.display = 'none';
	}
}