// JavaScript Document

// for the thumbnail rollovers (gray scale to color) 
// size of array = largest # of thumbnails in a gallery

var SampleROImgs = new Array(12);
for (var i = 0; i < 12; i++) {
	 SampleROImgs[i] = new Image();
}
function chg1pic(a, img1) {
	document[a].src=[img1];
}
SampleROImgs[0].src = "images/Cephalorhynchus-commersonii.png";
SampleROImgs[1].src = "images/humpback-skeleton.png";
SampleROImgs[2].src = "images/Lagenorhynchus-cruciger.png";
SampleROImgs[3].src = "images/Balaenoptera-a-dwarf.png";
SampleROImgs[4].src = "images/Globicephala-macrorhynchus.png";
SampleROImgs[5].src = "images/Trichechus-inunguis.png";
SampleROImgs[6].src = "images/Steller-sea-lion.png";

SampleROImgs[7].src = "images/hawksbill.png";
SampleROImgs[8].src = "images/images/NMLClogo.png";
SampleROImgs[9].src = "images/humpback-migration.png";
SampleROImgs[10].src = "images/ranger-rick.png";
SampleROImgs[11].src = "images/penguin-guide.png";

// for the drop down menu
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_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}