// JavaScript Document
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; }
}

function hideClassRollover() {
	var chk = checkLayerVisible('classes');
	if (chk==false)
		MM_swapImgRestore();
}

function checkLayerVisible(lyr) {
	var obj;
	if ((obj=MM_findObj(lyr))!=null)
		if (obj.style)
			if ((obj.style.visibility == "visible")){
				return true;
			}
				
	return false;
}


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];}}
}

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_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];}
}

/* random image generation code */
var numImages = 9; 
var imgFileNameStart = "words/";
var imgFileNameEnd = ".gif";

function pickRandom(range) {
if (Math.random)
return (Math.round(Math.random() * (range-1))) + 1;
else {
var now = new Date();
return ((now.getTime() / 1000) % range) + 1;
}
}
// Write out an IMG tag, using a randomly-chosen image name.
var choice = pickRandom(numImages);
var imgSrc = imgFileNameStart + choice + imgFileNameEnd;

function popWin(pageName,width,height)
{
	window.open(pageName,"","toolbar=yes,width="+width+",height="+height+",status=no");
}