function toggle(id){
   if (document.all){
     //if(document.all[id].style.display == 'none'){
	   hideAll();
       document.all[id].style.display = '';
     //} else {
     //  document.all[id].style.display = 'none';
     //}
  return false;
   } else if (document.getElementById){
     //if(document.getElementById(id).style.display == 'none'){
	   hideAll();
       document.getElementById(id).style.display = 'block';
     //} else {
     //  document.getElementById(id).style.display = 'none';
     //}
  return false;
   }
 }
 
 function hideAll(){
 	if (document.all){
	  document.all['preventivi'].style.display = 'none';
	  document.all['prodotti'].style.display = 'none';
	  document.all['area'].style.display = 'none';
	} else {
	  document.getElementById('preventivi').style.display = 'none';
	  document.getElementById('prodotti').style.display = 'none';
	  document.getElementById('area').style.display = 'none';
	}
 }
 
 function trispide(idBottone){
 	if (idBottone == 'btn1'){
		if (document.all){
			document.all['btn1'].src = '/rasit/images/home/homer/preventivi_on.gif';
			document.all['btn2'].src = '/rasit/images/home/homer/prodotti_off.gif';
			document.all['btn3'].src = '/rasit/images/home/homer/area_off.gif';
		} else {
			document.getElementById('btn1').src = '/rasit/images/home/homer/preventivi_on.gif';
			document.getElementById('btn2').src = '/rasit/images/home/homer/prodotti_off.gif';
			document.getElementById('btn3').src = '/rasit/images/home/homer/area_off.gif';
		}
	} else if (idBottone == 'btn2'){
		if (document.all){
			document.all['btn1'].src = '/rasit/images/home/homer/preventivi_off.gif';
			document.all['btn2'].src = '/rasit/images/home/homer/prodotti_on.gif';
			document.all['btn3'].src = '/rasit/images/home/homer/area_off.gif';
		} else {
			document.getElementById('btn1').src = '/rasit/images/home/homer/preventivi_off.gif';
			document.getElementById('btn2').src = '/rasit/images/home/homer/prodotti_on.gif';
			document.getElementById('btn3').src = '/rasit/images/home/homer/area_off.gif';
		}
	} else {
		if (document.all){
			document.all['btn1'].src = '/rasit/images/home/homer/preventivi_off.gif';
			document.all['btn2'].src = '/rasit/images/home/homer/prodotti_off.gif';
			document.all['btn3'].src = '/rasit/images/home/homer/area_on.gif';
		} else {
			document.getElementById('btn1').src = '/rasit/images/home/homer/preventivi_off.gif';
			document.getElementById('btn2').src = '/rasit/images/home/homer/prodotti_off.gif';
			document.getElementById('btn3').src = '/rasit/images/home/homer/area_on.gif';
		}
	}
 }