function add_sub(a)
{
 var obj=document.getElementById("bankuai"+a);
 if(obj.style.display=="none")
  {
   obj.style.display="";
   document.getElementById("bankuai"+a+"back").src="images/menu_reduce.gif";
  }
  else
  { 
  document.getElementById("bankuai"+a+"back").src="images/menu_add.gif";
  obj.style.display="none"
  }
}


function add_sub_shebei(a)
{
 var obj=document.getElementById("bankuai"+a);
 if(obj.style.display=="none")
  {
   obj.style.display="";
   document.getElementById("bankuai"+a+"back").src="../../images/menu_reduce.gif";
  }
  else
  { 
  document.getElementById("bankuai"+a+"back").src="../../images/menu_add.gif";
  obj.style.display="none"
  }
}
function add_sub_gyp(a)
{
 var obj=document.getElementById("bankuai"+a);
 if(obj.style.display=="none")
  {
   obj.style.display="";
   document.getElementById("bankuai"+a+"back").src="../../images/menu_reduce.gif";
  }
  else
  { 
  document.getElementById("bankuai"+a+"back").src="../../images/menu_add.gif";
  obj.style.display="none"
  }
}
function add_sub_news(a)
{
 var obj=document.getElementById("bankuai"+a);
 if(obj.style.display=="none")
  {
   obj.style.display="";
   document.getElementById("bankuai"+a+"back").src="../../images/menu_reduce.gif";
  }
  else
  { 
  document.getElementById("bankuai"+a+"back").src="../../images/menu_add.gif";
  obj.style.display="none"
  }
}