function swap(targetId,buttonId){
  
  if (document.getElementById)
        {
        target = document.getElementById(targetId);
        buttonName = document.getElementById(buttonId);
        
            if (target.style.display == "none")
                {
                target.style.display = "";
				/*buttonName.innerHTML = "(-)";*/
                } 
            
            else 
                {
                target.style.display = "none";
				/*buttonName.innerHTML = "(+)";*/
                }
                
            if (target.style.display == "none")
                {
                buttonName.src = "img/pulricerca_menusx.gif";
                }
            else 
                {
                buttonName.src = "img/pulricerca_menusx.gif";
                }
        }
}

function swapApriChiudi1(targetId,buttonId){
  
  if (document.getElementById)
        {
        target = document.getElementById(targetId);
        buttonName = document.getElementById(buttonId);
        
            if (target.style.display == "none")
                {
                target.style.display = "";
                } 
            
            else 
                {
                target.style.display = "none";
                }
                
            if (target.style.display == "none")
                { 
                buttonName.src = "img/freccinaApriChiudi1Su.gif";
                }
            else 
                {
                buttonName.src = "img/freccinaApriChiudi1Giu.gif";
                }
        }
} 


function swapApriChiudi2(targetId,buttonId){
  
  if (document.getElementById)
        {
        target = document.getElementById(targetId);
       /* buttonName = document.getElementById(buttonId); */

            if (target.style.display == "none")
                {
                target.style.display = "";
                } 
            
            else 
                {
                target.style.display = "none";
                }
                
            /*if (target.style.display == "none")
                { 
                buttonName.src = "img/freccinaApriChiudi2Su.gif";
                }
            else 
                {
                buttonName.src = "img/freccinaApriChiudi2Giu.gif";
                }*/
        }
}