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 show_or_hide_sub_menu(menuName,imgId)
{
  var str = MM_findObj(imgId).src;
  if (str.indexOf("/images/plus.gif") !=-1 )
  {
      MM_findObj(menuName).style.display="block";
	  MM_findObj(imgId).src="/images/minus.gif";
  }
  else
  {
      MM_findObj(menuName).style.display="none";
	  MM_findObj(imgId).src="/images/plus.gif";
  }
}


function show_sub_menu(menuName,imgId)
{
  MM_findObj(menuName).style.display="block";
  if(imgId!=null)
  MM_findObj(imgId).src="/images/minus.gif";
}


function hide_sub_menu(menuName,imgId)
{
   MM_findObj(menuName).style.display="none";
   MM_findObj(imgId).src="/images/plus.gif";
}