function gaseste(id) {
  if (navigator.appName.toLowerCase().indexOf("netscape") > -1) {
    return document.getElementById(id).value;
  } else {
    return document.all[id];
  }
}


function leg(expID){
  if ((expID != null) && (expID != "")){
    var obj1 = gaseste(expID);
    var obj2 = gaseste(expID + "_ico");
    if (obj1 != null)
	{
      if (obj1.style.display == "block")
		  {
	        obj1.style.display = "none";
	        obj2.src = "imagini/plus.gif";
	      } 
	  else
		  {
	        obj1.style.display = "block";				
	        obj2.src = "imagini/minus.gif";
	        if(expID == 'Buton2') 
				{
		          if(gaseste("Buton4").style.display == 'block')
		            legatura('Buton4');
		        } 
			else if(expID == 'Buton4') 
				{
		          if(gaseste("Buton2").style.display == 'block')
		            legatura('Buton2');
		        } 
	        }				
      }
    }
 }


function legatura(expID){
  if ((expID != null) && (expID != "")){
    var obj1 = gaseste(expID);
    var obj2 = gaseste(expID + "_ico");
    if (obj1 != null)
	{
      if (obj1.style.display == "block")
		  {
	        obj1.style.display = "none";
	        obj2.src = "imagini/plus.gif";
	      } 
	  else
		  {
	        obj1.style.display = "block";				
	        obj2.src = "imagini/minus.gif";
	        }				
      }
    }
 }