function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

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 MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

// preload images:
if (document.images) {
who = new Image(170,28); who.src = "images/nav_who_over.gif";
mem = new Image(170,28); mem.src = "images/nav_mem_over.gif";
clb = new Image(170,42); clb.src = "images/nav_clb_over.gif";
nac = new Image(170,38); nac.src = "images/nav_nac_over.gif";
stu = new Image(170,38); stu.src = "images/nav_stu_over.gif";
cal = new Image(170,38); cal.src = "images/nav_cal_over.gif";
atm = new Image(170,38); atm.src = "images/nav_atmu_over.gif";
mem = new Image(170,38); mem.src = "images/nav_mem_over.gif";
com = new Image(170,38); com.src = "images/nav_com_over.gif";
atp = new Image(170,42); atp.src = "images/nav_atp_over.gif";
mkt = new Image(170,38); mkt.src = "images/nav_mkt_over.gif";
ecd = new Image(170,38); ecd.src = "images/nav_ecd_over.gif";
hon = new Image(170,38); hon.src = "images/nav_hon_over.gif";
lnk = new Image(170,38); lnk.src = "images/nav_lnk_over.gif";
lcon = new Image(144,20); lcon.src = "images/lnav_con_over.gif";
lcom = new Image(144,20); lcom.src = "images/lnav_com_over.gif";
lcal = new Image(144,20); lcal.src = "images/lnav_cal_over.gif";
lsrc = new Image(144,20); lsrc.src = "images/lnav_src_over.gif";
lmap = new Image(144,20); lmap.src = "images/lnav_map_over.gif";
}