function toggleTree(name,id)
{
	var obj = document.getElementById(name+'_'+id+'_button');
	if(!obj) return;
	if(obj.className == 'treeclosed')
	{
		if($(name+'_'+id+'_parent').innerHTML.length < 10) modul_getProduktgruppen(name,id);
		showElement(name+'_'+id+'_parent');
		obj.src = '/westend/img/minus.gif';
		obj.className = 'treeopened'
	} else
	{
		obj.src = '/westend/img/plus.gif';
		hideElement(name+'_'+id+'_parent');
		obj.className = 'treeclosed'
	}
}