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_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,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];}
}

function openIt(url) {
   var newWin = window.open(url,"","resizable=yes,location=yes,menubar=yes,toolbar=yes,width=600,height=360,scrollbars=yes");     
}

function openIt2(url) {
   var newWin = window.open(url,"","resizable=no,titlebar=no,location=no,menubar=no,toolbar=no,width=760,height=500,scrollbars=no");     
}

function openIt3(url) {
   var newWin = window.open(url,"","resizable=yes,titlebar=yes,location=no,menubar=yes,toolbar=no,width=780,height=500,scrollbars=yes");     
}


function openIt4(url) {
   var newWin = window.open(url,"","resizable=no,titlebar=no,location=no,menubar=no,toolbar=no,width=788,height=575,scrollbars=no");     
}

function openArt1(url) {
   var newWin = window.open(url,"","resizable=no,titlebar=no,location=no,menubar=no,toolbar=no,width=380,height=316,scrollbars=no");     
}

function openArt2(url) {
   var newWin = window.open(url,"","resizable=no,titlebar=no,location=no,menubar=no,toolbar=no,width=620,height=470,scrollbars=no");     
}
function openArt3(url) {
   var newWin = window.open(url,"","resizable=no,titlebar=no,location=no,menubar=no,toolbar=no,width=470,height=495,scrollbars=no");     
}
function openArt4(url) {
   var newWin = window.open(url,"","resizable=no,titlebar=no,location=no,menubar=no,toolbar=no,width=380,height=318,scrollbars=no");     
}
function openArt5(url) {
   var newWin = window.open(url,"","resizable=no,titlebar=no,location=no,menubar=no,toolbar=no,width=308,height=388,scrollbars=no");     
}
function openArt6(url) {
   var newWin = window.open(url,"","resizable=no,titlebar=no,location=no,menubar=no,toolbar=no,width=416,height=341,scrollbars=no");     
}

function openPotato(url) {
   var newWin = window.open(url,"","resizable=no,titlebar=no,location=no,menubar=no,toolbar=no,width=200,height=100,scrollbars=no");     
}

function openTimeline(url)
{
   var newWin = window.open(url,"","resizable=no,menubar=no,toolbar=no,width=700,height=500,scrollbars=no");
        
}

function openThis(url)
{
   var thisWin=
window.open(url,"","resizable=yes,menubar=yes,toolbar=yes,width=450,height=300,scrollbars=yes");
}

function fixLayers() {
	if (navigator.appName == "Netscape") {
		if (parseFloat(navigator.appVersion) >= 4.5) {
			document.location.reload();
		} // End Check AppVersion
	}// End Check AppName
} // End fixLayers

function MM_showHideLayers() { //v3.0
  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 MM_checkBrowser(NSvers,NSpass,NSnoPass,IEvers,IEpass,IEnoPass,OBpass,URL,altURL) { //v3.0
  var newURL='', verStr=navigator.appVersion, app=navigator.appName, version = parseFloat(verStr);
  if (app.indexOf('Netscape') != -1) {
    if (version >= NSvers) {if (NSpass>0) newURL=(NSpass==1)?URL:altURL;}
    else {if (NSnoPass>0) newURL=(NSnoPass==1)?URL:altURL;}
  } else if (app.indexOf('Microsoft') != -1) {
    if (version >= IEvers || verStr.indexOf(IEvers) != -1)
     {if (IEpass>0) newURL=(IEpass==1)?URL:altURL;}
    else {if (IEnoPass>0) newURL=(IEnoPass==1)?URL:altURL;}
  } else if (OBpass>0) newURL=(OBpass==1)?URL:altURL;
  if (newURL) { window.location=unescape(newURL); document.MM_returnValue=false; }
}

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}

MM_reloadPage(true);

function doMenuJump(theMenu)
{	
	if (theMenu.selectedIndex)
		window.location = theMenu.options[theMenu.selectedIndex].value;
}

function doMenuJumpNew(theMenu)
{	
	if (theMenu.selectedIndex)
   var newWin = window.open(window.location,"","resizable=yes,menubar=yes,toolbar=yes,width=450,height=300,scrollbars=yes");
	newWin.window.location = theMenu.options[theMenu.selectedIndex].value;
     
}

// added 9/16/2002
function isValid() {
	// get the last id in set
	aEndPos = document.forms[0].IDlist.value.lastIndexOf("a");
	lastIdStr = document.forms[0].IDlist.value.substring((aEndPos + 1));
	lastId = parseInt(lastIdStr, 10);
	
	// get the first id in set
	aBeginPos = document.forms[0].IDlist.value.indexOf("a");
	pipePos = document.forms[0].IDlist.value.indexOf("|");
	firstIdStr = document.forms[0].IDlist.value.substring((aBeginPos + 1), pipePos);
	firstId = parseInt(firstIdStr, 10);
	
	quizComplete = true;
	
	// loop thru all questions.. assumption is that there are no skipped numbers between the first and last ids
	for(var i = firstId; i < (lastId + 1); i++) {
		//alert("document.forms[0].a" + (i));
		var currObj = eval("document.forms[0].a" + (i));
		var choiceNum = currObj.length;
		// check the 4 choices
		isAnswered = false;
		for(j = 0; j < choiceNum; j++) {
			if(currObj[j].checked == true) {
				isAnswered = true;
			}
		}
		if(isAnswered == false) {
			quizComplete = false;
		}
		
	}
	//alert(quizComplete);
	return quizComplete;
}

function goNext(btn) {
	if(isValid() == false) {
		alert('Please complete the entire quiz');
	} else {
		document.forms[0].submit();
	}
}