function change(id) {
  var obj = document.getElementById(id);
  var objImg = document.getElementById("img"+id);
  if (obj!=null && obj.style!=null) {
  	if (obj.style.display=="none") {obj.style.display="block"; objImg.src = "/img/collapse_icon.jpg" }
  	else {obj.style.display="none"; objImg.src = "/img/expand_icon.jpg" }
  }
}

function mouse_over(obj) {
  obj.style.backgroundColor="#F7F9F9";
}

function mouse_out(obj) {
  obj.style.backgroundColor="#ffffff";
}

var opcionSel = null;
var menuSel = null;

function top_menu_mouse_over(obj) {
  if (opcionSel!=obj) {
    //obj.style.backgroundColor="#9EB4BC";
	obj.style.backgroundImage="url(img/bknav1.jpg)";
  }
}

function top_menu_mouse_out(obj) {
  if (opcionSel!=obj) {
     obj.style.backgroundColor="transparent";
	 obj.style.backgroundImage="";
  }	 
}

function top_menu_mouse_click(obj,submenu) {
  if (opcionSel!=obj && opcionSel!=null) {
  	opcionSel.style.backgroundColor="transparent";
	  opcionSel.style.color="#5f7c89";
	  opcionSel.style.backgroundImage="";
	}
  opcionSel=obj; 
  //obj.style.backgroundColor="#5f7c89";
  obj.style.color="#5f7c89";
  obj.style.backgroundImage="url(img/bknav2.jpg)";
  
  if (submenu!=null) {
  	var sm = document.getElementById(submenu);
	  if (menuSel!=null) menuSel.style.display="none";
	  menuSel = sm;
	  sm.style.display="";
  }
}

var nav=navigator.appName.indexOf("Netscape")
var vers=parseInt(navigator.appVersion);

// Menu 
if ((nav != -1 && vers >= 3) || (vers==4) ) {
	vincolo1 = new Image(); vincolo1.src = "/img/vincolo.gif";
	vincolo2 = new Image(); vincolo2.src = "/img/vincolo_sel.gif";
}

function SelectImage(ImageName) {
   	if ( (nav != -1 && vers >= 3) || (vers==4) ) {
		document[ImageName].src = eval(ImageName + '2' + '.src');
	}		
}

function UnSelectImage(ImageName) {
   	if ( (nav != -1 && vers >= 3) || (vers==4) ) {
		document[ImageName].src = eval(ImageName + '1' + '.src');
	}		
}