var tabattivo = 1;

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function tabselect(tab) { 
	//alert(tab.id.substr(3,1));
	var tabnumber = tab.id.substr(3,1);
	//var tabnumber = tab;
	//alert(tabnumber);
	//var tabno = parseInt(tabnumber);
	
	accendi(tabnumber);
 	activetab=(tabnumber);
	
}

 function hidemenu(evt,caller) {

	if (!evt) evt = window.event;
	var tg = caller;
	var reltg = (evt.relatedTarget) ? evt.relatedTarget : evt.toElement;

	while (reltg != tg && reltg.nodeName != 'HTML') {
		//alert(reltg.nodeName);
		reltg = reltg.parentNode
	}
	
	if (reltg == tg) {
		return;
	}
	var tabnumber = tg.id.substr(3,1);
	//var tabnumber = tg;
	spegni(tabnumber);
	
}

function accendi(n) {
	MM_changeProp('tab'+ n,'','style.display','block','DIV')
	MM_changeStyle('tab'+ n + '_sx','menuL-ON');
	MM_changeStyle('tab'+ n + '_mid','menu-ON');
	MM_changeStyle('tab'+ n + '_dx','menuD-ON');

	
}

function spegni(n) {
	MM_changeProp('tab'+ n,'','style.display','none','DIV')
	MM_changeStyle('tab'+ n + '_sx','menuL-OFF');
	MM_changeStyle('tab'+ n + '_mid','menu-OFF');
	MM_changeStyle('tab'+ n + '_dx','menuD-OFF');
	
	if (n == tabattivo ){
	MM_changeStyle('tab'+ n + '_sx','menuL-ON');
	MM_changeStyle('tab'+ n + '_mid','menu-ON');
	MM_changeStyle('tab'+ n + '_dx','menuD-ON'); 
	}
	
}

function accendidiv(n) {

	MM_changeProp('divcontent'+ n,'','style.display','block','DIV')
	MM_changeStyle('divlabel'+ n ,'tabbox-ON');
	MM_changeStyle('divlabelsx'+ n ,'tabboxsx-ON');
	MM_changeStyle('divlabeldx'+ n ,'tabboxdx-ON');
}

function  divVisibility(divname, visibility) {
	var divobj = document.getElementById(divname);

	if (visibility) {
			divobj.style.display='block'; 
	} else {
			divobj.style.display='none';
	}
}

function MM_changeStyle(objName,newClassName) { //v6.0
  var obj = MM_findObj(objName);
  obj.setAttribute('className',newClassName);   //per Internet Explorer
  obj.setAttribute('class',newClassName);		//per Mozzilla&C.
}
function MM_changeProp(objName,x,theProp,theValue) { //v6.0
  var obj = MM_findObj(objName);
  if (obj && (theProp.indexOf("style.")==-1 || obj.style)){
    if (theValue == true || theValue == false)
      eval("obj."+theProp+"="+theValue);
    else eval("obj."+theProp+"='"+theValue+"'");
  }
}