function refreshValues() {
	//var passwordId = document.getElementById("password");
	//var usernameId = document.getElementById("username");
	
	if(document.getElementById("username")) {
   		document.getElementById("username").value="";
	}
	if(document.getElementById("password")) {
   		document.getElementById("password").value= "";
	}
	if(document.getElementById("gn_checkbox1")) {
   		document.getElementById("gn_checkbox1").checked = false;
	}
	if(document.getElementById("gn_checkbox2")) {
   		document.getElementById("gn_checkbox2").checked = false;
	}
}

function showMenu(menuName,margin) {
  	hideAllMenus(menuName);
  	//show iframe
	if(document.getElementById(menuName)) {
	  document.getElementById(menuName).style.visibility='visible';
	  if(margin!='')
	  {
		document.getElementById(menuName).style.margin = margin;
	  }
	}
	//adjust corresponding iframe height
	if(document.getElementById(menuName + "-iframe")) {
	  document.getElementById(menuName + "-iframe").style.height = document.getElementById(menuName).offsetHeight - 13; 
	}
	//document.getElementById(menuName + "-iframe").style.height = document.getElementById(menuName).offsetHeight - 13; 
	if(document.getElementById(menuName + "-iframe")) {
	  document.getElementById(menuName + "-iframe").style.visibility='visible';
	}
  	//document.getElementById(menuName + "-iframe").style.visibility='visible';
} 
  
function hideAllMenus(menuName) {
	 if(document.getElementById(menuName)) {
   	 	document.getElementById(menuName).style.visibility='hidden';
	 }
	 if(document.getElementById(menuName + "-iframe")) {
   	  	document.getElementById(menuName + "-iframe").style.visibility='hidden';
	 }	 
}

function nascondi()
{
    hideAllMenus('carrellopopup-box');
    hideAllMenus('carrellopopup-overlay');
    refreshValues();
    return false;
}