/*
/ tb_nav.js
/
/ Rollover functions for the top, bottom and side navigation areas.
/
/ The rollover scripts are adapted from Dreamweaver.  I've put them
/ all here in one file to centralize things and also save a bit of
/ space.
/
/ Each button has its own function that it can call, instead of
/ calling the generic MM_swapImage function with a bazillion args.
*/

function MM_preloadImages() { //v3.0
  var d=document;
  if(d.images) {
    if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments;
    for(i=0; i<a.length; i++) {
      if (a[i].indexOf("#")!=0){
        d.MM_p[j]=new Image;
        d.MM_p[j].src=a[i];
        j++;
      }
    }
  }
}

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;
  }
  document.MM_sr.length = 0;
}

function MM_findObj(n, d) { //v4.0
  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 && document.getElementById) x=document.getElementById(n);
  return x;
}

function MM_swapImage() { //v3.0
  var i,x,a=MM_swapImage.arguments;
  if(!document.MM_sr) document.MM_sr=new Array;
  var j = document.MM_sr.length;
  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];
    }
  }
}