function valt(max,obj,ez) {
    if (obj != '') {
    	var id=obj.id.replace('label_', '');
    } else if (ez != '') {
        var id = ez;
    }
    id = Number(id);
    for (var i=1; i<=max; i++)
	{
        if(document.getElementById('box_'+i) != null)
        {
         document.getElementById('box_'+i).style.display="none";
         //document.getElementById('label_'+i).className="";
        }

	}
	document.getElementById('box_'+id).style.display="block";
    //document.getElementById('label_'+id).className = "active";
   // document.getElementById('nextbutton').onclick = function(){valt(5,'',(id+1))};
}