var num = new Array()
var state = new Array()
var compound = new Array()
var ans1 = ""
var tut1 = ""
var side1 = ""
var ans2 = ""
var tut2 = ""
var side2 = ""
var reaction = ""
var rightAnswer = ""
var leftAnswer = ""
var passer = ""
var levela = 1
var netscape = "";
var ver = navigator.appVersion
var len = ver.length;
var iln = 0
var k = 0

for(iln = 0; iln < len; iln++) if (ver.charAt(iln) == "(") break;
netscape = (ver.charAt(iln+1).toUpperCase() != "C");

compound[1] = "A?"
compound[2] = "B?"
compound[3] = "C?"
compound[4] = "D?"

window.name = "myWin"

function drawit(){
gURL = "drawGraph.htm?" + passer
window.open(gURL,'graphWdw', 'menubar,scrollbars,width=600,height=420');

}
function tutor(){
alert("A");
gURL = "tutor.htm?" + tut1
if (netscape){
			window.open(gURL,'tutorWdw', 'menubar,width=480,height=220,screenY = 600');
		}else{
			window.open(gURL,'tutorWdw', 'menubar,width=480,height=220,top = 220');
		}

}

function setUp(){
var changer = new Array()
var amount = new Array()
var remain = new Array()

var i = 1
var b = 0
var dummy = 0
var least = 4
var chk = 0
var AA = 0
var AB = 0
var AC = 0
var AD = 0
var LL = 0
var Factor = 1

passer = ""

//document.AForm.rightwrong.src = "spc.gif"
//document.AForm.calltutor.src = "spc.gif"
// DEFINE COEFFICIENTS
for (i==1;i<5;i++){
	dummy = Math.round(-0.5 + 3*Math.random())
	if ((i==2) && (num[1] == 0)) dummy = Math.round(0.5 + 3*Math.random())
	if ((i==4) && (num[3] == 0)) dummy = Math.round(0.5 + 3*Math.random())

	num[i] = 1*dummy
if ((num[i] != 0) && (num[i] < least)) least = num[i]
}

if (least > 1){
	dummy = 0
	i = 1
	for (i==1;i < 5;i++){
		if ((num[i] > 0) && (Math.round(num[i]/least) != 1)) dummy += 1

		}
i = 1
		if (dummy == 0){
				for (i==1;i < 5;i++) num[i] = 1
					least = 1
		}
}
//MAKE SOME COEFFICIENTS NEGATIVE
i = 1
for (i==1;i< 5; i++){

	if (num[i] > 0) {
	chk += 1
changer[chk] = i
							}
					}
LL = changer.length - 1
AA = Math.round(0.5 + LL*Math.random())
num[changer[AA]] *= -1
if (LL>2){
	AB = AA
	while (AB==AA) AB = Math.round(0.5 + LL*Math.random())
	if (LL == 4){
		 num[changer[AB]] *= -1
				}else{
		if (Math.random() > 0.5) num[changer[AB]] *= -1
		}
	}
//FIND HOWMANY REACTANTS
i = 1
chk = 0
	for (i==1;i<5;i++){
		changer[i] = 0
		if (num[i] < 0){
			chk +=1
			changer[chk] = i
		}
	}

		
// FIND MAXIMUM COEFF FOR PRODUCTS
i = 1
most = 0
for (i==1;i<5;i++){
		if (Math.abs(num[i]) > most) most = Math.abs(num[i])
	}
//MOST = X (change)  Assign Limiting Rgt
most = -1*(60 + 6*Math.round(-0.5 + 7*Math.random()))/most

	i = changer[1]
	amount[i] = Math.round(most*num[i])
	if (levela == 3) amount[i] = amount[i] + Math.round((99 - amount[i])*Math.random())
if (chk > 1){
	i = changer[2]
	amount[i] = Math.round(most*num[i] + (97 - most*num[i])*Math.random())
	if (Math.random() > .5){
		i = changer[2]
	amount[i] = Math.round(most*num[i])
	if (levela == 3) amount[i] = amount[i] + Math.round((99 - amount[i])*Math.random())
	i = changer[1]
	amount[i] = Math.round(most*num[i] + (97 - most*num[i])*Math.random())
	}
}
//DETERMINE AMOUNTS OF NON REACTANTS
i = 1
for (i==1;i<5;i++){

	if (num[i] > 0){
			amount[i] = 0
				if (levela > 1){
						amount[i] = Math.round(97 + most*num[i])
				}
				}
			if (num[i] == 0){
						amount[i] = Math.round(0.5 + 90*Math.random())
						amount[i] = amount[i].toString()
						}

		}


//
i = 1
for (i==1;i<5;i++){
	if (num[i] != 0){
				//amount[i] = Math.round(Math.abs(num[i]*amount[i]))
				remain[i] = Math.round(amount[i] - num[i]*most)
				amount[i] = amount[i].toString()
				remain[i] = remain[i].toString()
		}else{
				remain[i] = amount[i]
				}
		while (amount[i].length < 3) amount[i] = "0" + amount[i]
		while (remain[i].length < 3) remain[i] = "0" + remain[i]	
	passer = passer + amount[i] + remain[i]
}		
Factor = 2
	passer = passer + Factor

leftAnswer = ""
rightAnswer = ""
i = 1
for (i==1;i<5;i++){
	if (num[i] < 0) leftAnswer = leftAnswer + Math.abs(num[i]) + compound[i]
	if (num[i] > 0) rightAnswer = rightAnswer + num[i] + compound[i]
}
tut1 = ""
tut2 = ""
i = 1
for (i==1; i < 5; i++){
if (num[i] < 0){
	if (tut1 != "") tut1 = tut1 + " + "
	if (num[i] < -1) tut1 = tut1 + Math.abs(num[i]) + " "
	tut1 = tut1 + compound[i].charAt(0) + " "
}
	if (num[i] > 0){
	if (tut2 != "") tut2 = tut2 + " + "
		if (num[i] > 1) tut2 = tut2 + num[i] + " "
		tut2 = tut2 + compound[i].charAt(0) + " "
	}
}
	tut1 = tut1 + "<img src = 'arrow.gif' border = 0 width= 24 height =  8>&nbsp;" + tut2



drawit()
}