var DHTML = (document.getElementById || document.all || document.layers);        
  
  function getObj(name){
    if (document.getElementById){
      this.obj = document.getElementById(name);
      if ( document.getElementById(name) != null ) {
    	  this.style = document.getElementById(name).style;
    	  this.inner = document.getElementById(name).innerHTML;    
      } else {
    	  this.style = "";
    	  this.inner = "";
      }
      
    }else if (document.all){
      this.obj = document.all[name].id;
      this.style = document.all[name].style;
      this.inner = document.all[name].innerHTML;    
    }else if (document.layers){
      this.obj = document.layers[name].id;
      this.style = document.layers[name];
      this.inner = document.layers[name]; 
    }
  }
    
  function inizializza(nameONE){
	if (!DHTML) return;
	invisible('x'+nameONE);
  }
  
  function invisible(nameONE){
	x = new getObj(nameONE);
	vis = x.style.display;
	if(vis=='' || vis=='none'){
	  x.style.display = 'block';
	}else{
	  x.style.display = 'none';		  
	}       
  } 
  
  function getIndex(mySelect){
    document.getElementById(mySelect).selectedIndex=0;
    document.adoped.tipo_testo[0].checked=true;
  }