var links = new Array()
 
links[0] = '<a href="highschool/virtual/complexadd.htm" class="two">virtual</a><br><font style="margin-left:8.9cm"><a href="highschool/eworkbook/complexnosaddition.pdf" class="two">eWorkBook</a></font>'
links[1] = '<a href="highschool/virtual/matrixadd.htm" class="two">virtual</a><br><font style="margin-left:6.1cm"><a href="highschool/eworkbook/matrixaddition.pdf" class="two">eWorkBook</a></font>'
links[2] = '<a href="highschool/virtual/matrixsub.htm" class="two">virtual</a><br><font style="margin-left:7cm"><a href="highschool/eworkbook/matrixsubtraction.pdf" class="two">eWorkBook</a></font>'
links[3] = '<a href="highschool/virtual/distance2d.htm" class="two">virtual</a><br><font style="margin-left:10cm"><a href="highschool/eworkbook/distancebetween2points.pdf" class="two">eWorkBook</a></font>'
links[8] = ""
links[4] = '<a href="highschool/virtual/midpoint.htm" class="two">virtual</a><br><font style="margin-left:4.5cm"><a href="highschool/eworkbook/midpoint.pdf" class="two">eWorkBook</a></font>'
links[5] = '<a href="highschool/virtual/slopeofline.htm" class="two">virtual</a><br><font style="margin-left:8cm"><a href="highschool/eworkbook/slopestraightline.pdf" class="two">eWorkBook</a></font>'
links[6] = '<a href="highschool/virtual/singleprob.htm" class="two">virtual</a><br><font style="margin-left:8.1cm"><a href="highschool/eworkbook/singleeventprobability.pdf" class="two">eWorkBook</a></font>'
links[7] = '<a href="highschool/virtual/poissondist.htm" class="two">virtual</a><br><font style="margin-left:7.3cm"><a href="highschool/eworkbook/poissondistribution.pdf" class="two">eWorkBook</a></font>'

var ns6=document.getElementById&&!document.all
var ie=document.all
var timer = window.setTimeout("hideLinks()",10000)
timer = window.clearTimeout(timer)

function showLinks(indx,opr)
{
	var other = "span"
	timer = window.clearTimeout(timer)
	if (ie) eval("document.all."+opr).innerHTML = links[indx]
	else if (ns6) document.getElementById(opr).innerHTML=links[indx]
	
	for(i=0;i<9;i++)
	{
		other = "span" + (i + 1)
		if(i != indx)
		{	eval("document.all."+other).innerHTML = links[8]	}
	}
}

function startTimer()
{
	timer = window.setTimeout("hideLinks()",10000)
}

function hideLinks()
{	
	var allLinks
	for(i=1;i<9;i++)
	{
		allLinks = "span" + i
		{	eval("document.all."+allLinks).innerHTML = links[8]	}
	}
}

