function menu_openclose(element){
	var el = $(element);
	
	if(el.id.substr(0,4)!="menu"){
		return;
	}
	
	var id = el.id.substr(5);
	var childs = $("childs-"+id);
	
	if(childs.display == 'none'){
		childs.display = 'block';
		Effect.BlindDown(childs,{duraion: 0.6});
	}else{
		Effect.BlindUp(childs,{duraion: 0.6});
		childs.display = 'none';
	}
	
	
}