Ext.onReady(function(){	
	var div = Ext.get('top-book');
	if(div == null) return;
	var items = div.select('div.item');
	
	var frist = null;
	
	Ext.each(items.elements,function(it){
		var item = Ext.get(it);
		var lbl = item.lbl = item.child('div.label');
		var txt = item.txt = item.child('div.text');
		if(frist == null) frist = item;
		lbl.setVisibilityMode(Ext.Element.DISPLAY);
		txt.setVisibilityMode(Ext.Element.DISPLAY);
		
		lbl.orgH = lbl.getHeight();
		txt.orgH = txt.getHeight();		
		txt.hide();
		
		lbl.on('click',function(e){
			e.stopEvent();
			var p = this.parent();
			p.lbl.hide();
			p.txt.show(true);

			frist.lbl.show();
			frist.txt.hide();
			
			frist = p;
			
		});
		lbl.on('mouseenter',function(){
			item.addClass('over');
		});
		lbl.on('mouseleave',function(){
			item.removeClass('over');
		});
		
		
	});
	if(frist){
		frist.txt.show();
		frist.lbl.hide();
	}
	
});