function $(id) {
    return document.getElementById(id);
}

function showMenu (baseID, divID) {
    baseID = $(baseID);
    divID  = $(divID);
    if (showMenu.timer) clearTimeout(showMenu.timer);
	hideCur();
    divID.style.display = 'block';
	showMenu.cur = divID;

    if (! divID.isCreate) {
        divID.isCreate = true;
        //divID.timer = 0;
        divID.onmouseover = function () {
            if (showMenu.timer) clearTimeout(showMenu.timer);
			hideCur();
            divID.style.display = 'block';
        };

        function hide () {
            showMenu.timer = setTimeout(function () {divID.style.display = 'none';}, 1000);
        }
        divID.onmouseout = hide;
        baseID.onmouseout = hide;
    }
	function hideCur () {
		showMenu.cur && (showMenu.cur.style.display = 'none');
	}
}
function fetch_object(idname)
{
 var my_obj = document.getElementById(idname);
 return my_obj;
}
function toggle_nav(obj)
{
 for (i = 1; i<= 9; i++ )
 {
  var sub_nav = fetch_object("zzjs_nav" + i);
  if (obj == i)
  {
   sub_nav.style.display = "block";
  }
  else
  {
   sub_nav.style.display = "none";
  }
 }
}
function toggle_nav2(obj)
{
 for (i = 1; i<= 9; i++ )
 {
  var sub_nav = fetch_object("wz" + i);
  if (obj == i)
  {
   sub_nav.style.display = "block";
  }
  else
  {
   sub_nav.style.display = "none";
  }
 }
}
function toggle_nav3(obj)
{
 for (i = 1; i<= 9; i++ )
 {
  var sub_nav = fetch_object("czxygy" + i);
  if (obj == i)
  {
   sub_nav.style.display = "block";
  }
  else
  {
   sub_nav.style.display = "none";
  }
 }
}
function toggle_nav4(obj)
{
 for (i = 1; i<= 9; i++ )
 {
  var sub_nav = fetch_object("db" + i);
  if (obj == i)
  {
   sub_nav.style.display = "block";
  }
  else
  {
   sub_nav.style.display = "none";
  }
 }
}
function toggle_nav5(obj)
{
 for (i = 1; i<= 9; i++ )
 {
  var sub_nav = fetch_object("zd" + i);
  if (obj == i)
  {
   sub_nav.style.display = "block";
  }
  else
  {
   sub_nav.style.display = "none";
  }
 }
}
function yc(index){  
switch(index){     
case 1:{     
document.getElementById('zdb1').style.display = "block";     
document.getElementById('zdb2').style.display = "none";
document.getElementById('zdbs1').style.background = "#3399FF";
document.getElementById('zdbs2').style.background = "#FFF";
break;  
}     

case 2:{     
document.getElementById('zdb1').style.display = "none";     
document.getElementById('zdb2').style.display = "block"; 
document.getElementById('zdbs1').style.background = "#FFF";
document.getElementById('zdbs2').style.background = "#3399FF";
break;         
}     
  }     
} 
function yc2(index){  
switch(index){     
case 1:{     
document.getElementById('zzdb1').style.display = "block";     
document.getElementById('zzdb2').style.display = "none";
document.getElementById('zzdb3').style.display = "none";
document.getElementById('zdbb1').style.background = "#3399FF";
document.getElementById('zdbb2').style.background = "#FFF";
document.getElementById('zdbb3').style.background = "#FFF";
break;  
}     
case 2:{     
document.getElementById('zzdb1').style.display = "none";     
document.getElementById('zzdb2').style.display = "block";
document.getElementById('zzdb3').style.display = "none"; 
document.getElementById('zdbb1').style.background = "#FFF";
document.getElementById('zdbb2').style.background = "#3399FF";
document.getElementById('zdbb3').style.background = "#FFF";
break;         
}  
case 3:{     
document.getElementById('zzdb1').style.display = "none";     
document.getElementById('zzdb2').style.display = "none";
document.getElementById('zzdb3').style.display = "block"; 
document.getElementById('zdbb1').style.background = "#FFF";
document.getElementById('zdbb2').style.background = "#FFF";
document.getElementById('zdbb3').style.background = "#3399FF";
break;         
}  
  }     
}