var idlabslideshow = new Class({
  
  
  initialize: function(numdiv, div_contenitore , options)
  
  {
    this.div_contenitore = $(div_contenitore);
    this.elenco_div = this.div_contenitore.getChildren();
	this.elenco_div.setStyle('display', 'none');
	this.elenco_div.fade('hide');
	this.div_to_show = "img_" + numdiv;
	this.show(this.div_to_show);
  },
  			
  
  show: function(index)
  {
    var div_da_mostrare = index
	var browserName=navigator.appName; 
	
	if(div_da_mostrare == this.div_in_mostra) return;
	
	if(this.div_in_mostra)
	{
		this.div_in_mostra.setStyle('display', 'none');
		this.div_in_mostra.fade('out')
			
	}
	
	var my_el = document.getElementById(div_da_mostrare);
		
	if (browserName=="Microsoft Internet Explorer")
	{
		my_el.setStyle('display', 'inline-block');
		my_el.setStyle('filter', '');
	}
	else
	{
		my_el.setStyle('display', 'inline-block');
		my_el.setStyle('overflow', 'hidden');
	}
	
		my_el.fade('in');
		this.div_in_mostra = my_el;
	}
	
	
	
  
  
});