var usernamePopup;
var usertypePopup;
start=0
ya=0
conjugations=0
clock=0
commands=0
whichCommands=0
allverbs=0
solution=0
attempted=0
correct=0
verb=0
tenseNumber=0
pronoun=0
numberpicked=0;
var name="";
var etre=0;
var sent_already="no";
selectedcommand=new Array();
selectedinfinitive=new Array();
selectedyo=new Array();
selectedtu=new Array();
selectedella=new Array();
selectednosotros=new Array();
selectedvosotros=new Array();
selectedellas=new Array();
selectedmeaning=new Array();
selectedpart=new Array();
var up
var down;
var min
var sec;
stop=0;
running=0;
var printedGrade;
thislist=new Array();
var vs;
var tt;
var ps;
var addendum;
var language;
ns=(navigator.appName.indexOf("Netscape") != -1)?true:false;
ie=(navigator.appName.indexOf("Microsoft") != -1)?true:false;

function commandsYes(value,howMany) {
	if (value=="yes") {
		commands="yes";
		whichCommands=howMany;
	}
	else {commands=0;}

}

function whichLanguage(value) {
	language=value;
}

function accent() {
	if (language=="spanish") {
		spanishAccent();
		return
	}
	if (language=="french") {
		frenchAccent();
		return
	}

	if (language=="latin") {
		latinAccent();
		return
	}
	if (language=="german") {
		germanAccent();
		return
	}
	if (language=="italian") {
		italianAccent();
		return
	}

	else {return false}
}


function completeConjugation() {
	if (language=="spanish") {
		spanishConjugation();
		return
	}
	if (language=="french") {
		frenchConjugation();
		return
	}
	if (language=="latin") {
		latinConjugation();
		return
	}
	if (language=="german") {

		germanConjugation();
		return
	}
	if (language=="italian") {

		italianConjugation();
		return
	}
	else {return false}
}



function whichTenses() {
	
	
	if (document.conjugator.tenselist[0].selected) {
		tenseNumber=Math.floor(Math.random()*tenses.length);
	}

	else {
		var setTense=false;
		tenseNumber=Math.floor(Math.random()*tenses.length+1);
		tenseNumber=tenseNumber-1;
		if (document.conjugator.tenselist[tenseNumber+1].selected) {
			var setTense=true;
		}
		else {
			while(!setTense) {
				tenseNumber=Math.floor(Math.random()*tenses.length+1);
				tenseNumber=tenseNumber-1;
				if (document.conjugator.tenselist[tenseNumber+1].selected) {
					var setTense=true;
				}
			}
		}
	}
	document.conjugator.tense.value=tenses[tenseNumber];
}




function noVerbs() {
	alert('Your teacher has disabled the SELECT VERB feature, so you will have to practice all the verbs in the list.');
	

}


function whichVerbs() {

	
	var myVerbs=new Array();
	var mv=0;
	for (i=0;i<=infinitive.length;i++) {
		if (document.conjugator.verbs[i].selected && document.conjugator.verbs[i].value>=1) {
			myVerbs[mv]=document.conjugator.verbs[i].value;
			mv++;

		}

	}

	if (myVerbs.length==1) {
		if (myVerbs[0]==0) {

			allverbs=0;

		}
		else {
			addVerbs(0, myVerbs[0]);
		}

	}
	else {
		for (i=0;i<myVerbs.length;i++) {
		var location=myVerbs[i];
			if (location==0) {

				allverbs=0;

			}
			else {
				addVerbs(i, location);
			}
		}


	}
	if (selectVerbs==false) {
		allverbs=0;

	}

}

function addVerbs(i, l) {

	allverbs++;
	if (commands=="yes") {
		selectedinfinitive[i]= infinitive[l-1];
		selectedcommand[i]=commandConjugations[l-1];
		selectedmeaning[i]=meaning[l-1];
	}
	else {

		selectedinfinitive[i]= infinitive[l-1];
		selectedyo[i]=yo[l-1];
		selectedtu[i]=tu[l-1];
		selectedella[i]=ella[l-1];
		selectednosotros[i]=nosotros[l-1];
		selectedvosotros[i]=vosotros[l-1];
		selectedellas[i]=ellas[l-1];
		selectedmeaning[i]=meaning[l-1];
			if (language=="latin" && part.length>0) {
				selectedpart[i]=part[l-1];
			}
	}

}


var tsec = -1;
var tmin = 0;
var thour = 0;
function stopwatch(text) {


   tsec++;
  if (tsec == 60) {
   tsec = 0;
   tmin = tmin + 1; }
  else {
   tmin = tmin; }
  if (tmin == 60) {
   tmin = 0;
   thour += 1; }

if (tsec<=9) { tsec = "0" + tsec; }
   document.sw.timer.value = ((tmin<=9) ? "0" + tmin : tmin) + " : " + tsec;

  if (text == "stop") {

	resetIt();
	return
	}
SD=window.setTimeout("stopwatch();", 1000);
}

function resetIt() {
  tsec = -1;
  tmin = 0;
  thour = 0;

  window.clearTimeout(SD);
 }


function changeSettings() {

	if (attempted!=0) {
		alert("WARNING\n\nBy changing settings while you are in the middle of an exercise, you reset your grade!");
		correct=0;
		attempted=0;
		conjugations=0;
		selectedpositive=new Array();
		selectednegative=new Array();
		selectedinfinitive=new Array();
		selectedyo=new Array();
		selectedtu=new Array();
		selectedella=new Array();
		selectednosotros=new Array();
		selectedvosotros=new Array();
		selectedellas=new Array();
		selectedmeaning=new Array();
		selectedpart=new Array();
		
	}
	else return
}
function howToSelectVerbs(reset) {
	whichVerbs();
	
	if (start==0) {
		correct=0;
		attempted=0;
		conjugations=0;
		sent_already="no";
		tsec = -1;
  		tmin = 0;
  		thour = 0;
		min=5;
		sec=0;
		stopwatch("start");
	}
	if (start!=0 && reset=="yes") {
		alert ("By pressing START in the middle of your practice, you reset your grade.");
		correct=0;
		attempted=0;
		sent_already="no";
		conjugations=0;
		min=5;
		sec=0;
		stopwatch("stop");
		stopwatch("start");
	}
	start++;

	if (commands=="yes") {

		if (allverbs==0) {

		randomizeAllCommands();
		}
		else {
		randomizeSelectedCommands();
		}
		return
	}else {
		if (allverbs==0) {
		randomizeAllVerbs();
		}
		else {
		randomizeSelectedVerbs();
		}

	}



}


function checkAnswer() {
	if (start==0) {
		alert("You must first press START to begin the practice.");
		}
	else {
		aCharExists=0;
		response=document.conjugator.answer.value.toLowerCase();
		for (i=0; i<response.length; i++) {
		if (response.charAt(i) != " ") {
			aCharExists=1;
			}
		}

		if (!aCharExists) {
			alert("Please type an answer first.");
			document.conjugator.answer.focus();
			}



		else {

		attempted++;

		while (response.charAt(0)==" ") {
		response=response.substring(1,response.length);
			}

		while (response.charAt(response.length-1)==" ") {
			response=response.substring(0,response.length-1);
			}


		while (response.match('  ')) {

			response=response.replace('  ',' ');
		}



		if (language=="latin") {
			if (passive==true) {
				writePassive();
				return
			}
		}
		if (language=="french") {
			if (match==true) {
				writeParticiple();
				return
			}
		}
			if (response==solution) {
				alert("CORRECT.");
				correct++;
				outofmemory = 0;
				howToSelectVerbs();
				return;
				}
			else {

				if (solution.match(/\u0113/)) {
					addendum=" (accent on first 'e' in ending)";


				}
				else if (solution.match(/\u012b/)) {
					addendum=" (accent on first 'i' in ending)";
					return
				}
				else {
					addendum="";


				}
				alert("INCORRECT.\nThe answer is: " + solution.toUpperCase() +" "+addendum+"\n\nHaving problems with accents?\nSee the HELP section for instructions.");
				document.conjugator.answer.value="";
				document.conjugator.answer.focus();
				}
			}
	}
}

function grade() {

	if (attempted==0) {
		alert("You have 0 attempts, so you have no grade.");
		}
	else {
	alert("You have correctly conjugated " + correct + " verb(s) in " + attempted + " attempt(s). \nYou have checked the COMPLETE CONJUGATION button "+conjugations+" time(s).\n\nYOUR CURRENT SCORE IS " + Math.round(correct/attempted*100) + " %.");
	document.conjugator.answer.focus();
	}
}

function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail ID")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true
	}

function getInfo() {


	if (attempted==0) {
		printedGrade="NO GRADE (0 attempts)";

	}
	else {
		printedGrade=Math.round(correct/attempted*100) + " % : "+correct+"/"+attempted;

	}

	if (allverbs==0) {
		vs="ALL VERBS";
	}
		else {
		vs=selectedinfinitive;
	}


thislist[0]=new Array('ALL PRONOUNS', 'ALL but vosotros','yo','tú','él','ella','usted','nosotros','vosotros','ellas','ellos','ustedes');
thislist[1]=new Array('ALL PRONOUNS', 'je', 'tu','il','elle','on','nous','vous','elles','ils');
thislist[2]=new Array('ALL PRONOUNS','ego','tu','is','ea','id','nos','vos','ei','eae','ea');
thislist[3]=new Array('ALL PRONOUNS','ich','du','er','Sie (sing.)','es','wir','ihre','Sie (pl.)');
thislist[4]=new Array('ALL PRONOUNS','io','tu','lui','Lui','?','noi','voi','Loro');
	var chosen=document.conjugator.pronouns.selectedIndex;

	tt=document.sw.timer.value;
	if (language=="spanish") {
		ps=thislist[0][chosen];
	}
	if (language=="french") {
		ps=thislist[1][chosen];
	}
	if (language=="latin") {
		ps=thislist[2][chosen];
	}
	if (language=="german") {
		ps=thislist[3][chosen];
	}
	if (language=="italian") {
		ps=thislist[4][chosen];
	}
}

function warning() {}


function gradeToTeacher(how,sid) {

	
	if (attempted==0) {
		alert("You have 0 attempts, so you have no grade.");
		return
		}
	if (sent_already=="yes" && how=="send_current") {

		var message="You cannot send the same grade twice. You can still print your grade, however, if you feel the 'send' feature did not work properly.\n\nTo send another grade, press START again to begin another practice.";
		alert(message);
		return 

	}
	var phpsession=document.conjugator.phpsession.value;
	usernamePopup=document.conjugator.username.value;
	usertypePopup=document.conjugator.usertype.value;

	var url="avancemos_popup.php?sid="+phpsession+"&type="+sid+"&do="+how;
	
	var sent = window.open(url,'sent','menubar=yes,scrollbars=no,toolbar=yes,height=500,width=600,resizable=yes');
	
	
	getInfo();
	if (how != "print_current") {
		sent_already="yes";
	}
	return
	

	

}


function openShortcuts() {
	var shrt=window.open('','shrt','menubar=no,scrollbars=yes,toolbar=no,height=300,width=500,resizable=yes');
shrt.document.open();
	shrt.document.write("<html><body bgcolor=yellow><center><font color=blue size=+1>Keyboard shortcuts for CONJUGUEMOS</center></font>");
	shrt.document.write("<table border=0 ><tr><th width=200>&nbsp;</th><th>For PC's</th><th width=15%>&nbsp;</th><th>For Macs</th>");
	shrt.document.write("</tr><tr><td><input type=button value='Am I correct?'></td><td>ENTER<font color=blue>*</font></td><td>&nbsp;</td><td>ENTER<font color=blue>*</font></td>");
	shrt.document.write("</tr><tr><td><input type=button value='Definition of verb'></td><td>Alt+d</td><td>&nbsp;</td><td>Control+d</td>");
	shrt.document.write("</tr><tr><td><input type=button value='Full Conjugation'></td><td>Alt+f</td><td>&nbsp;</td><td>Control+f</td>");
	shrt.document.write("</tr><tr><td><input type=button value='Add Accent'></td><td>Alt+a</td><td>&nbsp;</td><td>Control+a</td>");
	shrt.document.write("</tr><tr><td><input type=button value='My current grade'></td><td>Alt+g</td><td>&nbsp;</td><td>Control+g</td>");
	shrt.document.write("</tr></table><br><font color=blue>*</font>: In Netscape browsers, press Alt+c/Control+c</body></html>");
	shrt.document.close();

}


function latinList(verb_type,number) {
	alert(verb_type);
	lv=window.open('','lv','menubar=no,scrollbar=yes,toolbar=no,height=500,width=500');
	lv.document.open();
	lv.document.write("<html><body>hello.</body></html>");
	lv.document.close();
	return
	latinVerbs.document.write("<html><head><title>List of Latin Verbs</title>");
	latinVerbs.document.write("</head><body bgcolor=\"#ffff66\" onBlur=\"window.close()\"><img src=\"../images/list.gif\" alt=\"Conjuguemos List of Verbs\">");
	latinVerbs.document.write("<font color=\"blue\"><b>Latin Exercise #"+multiple+" <br>");
	latinVerbs.document.write("<font size=\"-1\">"+titles[number]+"</font><br>uses the following verbs:");
	latinVerbs.document.write("</font></b><br><ol>");

	for (i=0; i<infinitive.length; i++) {
			latinVerbs.document.write('<li>'+infinitive[i]);
			}
	latinVerbs.document.write('</ol>');

	latinVerbs.document.write('</body></html>');

	latinVerbs.document.close();
}


function definition() {
	if (start==0) {
		alert("You must first press START to begin the practice.");
		}
	else {
		if (allverbs==0) {
			var word=infinitive[verb];
			var fe=word.match(/\u0113/);
				if (fe) {
					word=word.replace('\u0113','e');
				}
			word=word.toUpperCase();
			var translation=meaning[verb].toUpperCase();
			alert(word + " means " + translation + ".");
			document.conjugator.answer.focus();
		}
		else {
			var word2=selectedinfinitive[verb];
			var fe=word2.match(/\u0113/);
				if (fe) {
					word2=word2.replace('\u0113','e');
				}
			word2=word2.toUpperCase();
			var translation2=selectedmeaning[verb].toUpperCase();
			alert(word2 + " means " + translation2 + ".");
		document.conjugator.answer.focus();
		}
	}
}



	







//COPY FROM HERE AND PATCH ONTO WEB


function Minutes(data) {
	for (var i=0; i<data.length; i++)
	if (data.substring(i,i+1)==":") break;
	return (data.substring(0,i));}

function Seconds(data) {
	for (var i=0; i<data.length; i++)
	if (data.substring(i,i+1)==":") break;
	return (data.substring(i+1,data.length));}

function setvariable() {

	if (running !=0) {
		return
	}
	min=1*Minutes(document.conjugator.clockinput.value);
	sec=0+Seconds(document.conjugator.clockinput.value);
	document.conjugator.time.value=Display(min,sec);
	clock++;
	running++;
	correct=0;
	attempted=0;
	countdown();
	}

function stopClock() {
	if (running!=0) {
	stop=1;
	countdown();
	}
	else {
	return
	}
}

function originalClock() {
	running=0;
}

function countdown(){
	if (document.conjugator.approval[0].checked && clock!=0) {
		sec--;
		if (sec==-1) {sec=59; min--}
		document.conjugator.time.value=Display(min,sec);
		if ((min==0)&&(sec==0)||stop==1) {
			alert("TIME'S UP!!\nYou correctly identified " + correct + " word(s) in " + attempted + " attempt(s).\nYou checked the COMPLETE CONJUGATION button "+conjugations+" time(s).\n\nYOUR SCORE IS " + Math.round(correct/attempted*100) + " %.");
			clock=0;
			stopwatch("stop");
			stop=0;
			running=0;
			start=0;
			document.conjugator.time.value="";
		}
		else {
			down=setTimeout("countdown()",1000);
		}
	}
	else {
		return
	}

}

function Display (min,sec) {
	var disp;
	if (min<=9)
		disp=" 0"

	else
		disp=" ";

	disp+=min+":";
	if (sec<=9)
		disp+="0"+sec;
	else
		disp+=sec;

	return(disp);
}


//STOP COPYING HERE



function captureclicks() {
	bName=navigator.appName;
	if (bName=="Netscape") {
	window.captureEvents(Event.KEYPRESS)

	}
}

function netscapeReturn(caughtEvent) {
	bName=navigator.appName;
	if (bName=="Netscape") {
		key=caughtEvent.which
		if (key==13) {
		checkAnswer();
		return false
		}
		return
		
		if (key==90) {
			alert ("You are about to check all of the conjugations.");


			if (commands=="yes") {
				for (i=0; i<infinitive.length; i++) {
				var testingWord=infinitive[i].toUpperCase();
				var testingMeaning=meaning[i].toUpperCase();
				alert(testingWord+": "+testingMeaning+"\n positive command: "+positive[i]+"\n negative command: "+negative[i]);
				}
			return false
			}
			else {
				proofcheck();
				return false

			}

		}
	}
}


function proofcheck() {
	if (language=="latin") {
		if (passive==true) {
			proofPassive();
			return
		}
	}

	if (language=="french") {
		if (etre==1) {
			proofEtre();
			return
		}


	}
	for (i=0; i<infinitive.length; i++) {
		lc=new Array(infinitive[i],meaning[i],yo[i],tu[i],ella[i],nosotros[i],vosotros[i],ellas[i]);
		for (j=0;j<lc.length;j++) {
			var fe=lc[j].match(/\u0113/);
			var fi=lc[j].match(/\u012b/);
			if (fe) {
				lc[j]=lc[j].replace('\u0113','e');
			}
			if (fi) {
				lc[j]=lc[j].replace('\u012b','i');
			}
		}
		var testingWord=lc[0].toUpperCase();
		var testingMeaning=lc[1].toUpperCase();
		alert(testingWord+": "+testingMeaning+"\n 1s: "+lc[2]+"\n 2s: "+lc[3]+"\n 3s: "+lc[4]+"\n 1p: "+lc[5]+"\n 2p: "+lc[6]+"\n 3p: "+lc[7]);
	}
}

function proofPassive() {
	for (i=0; i<infinitive.length; i++) {
		lc=new Array(infinitive[i],meaning[i],yo[i],tu[i],ella[i],nosotros[i],vosotros[i],ellas[i]);
		lc_endings=new Array('(us)(a)','(us)(a)','(us)(a)(um)','(i)(ae)','(i)(ae)','(i)(ae)(a)');
		for (j=2;j<lc.length;j++) {
			var h=j-2;
			lc[j]=lc[j].replace('X',lc_endings[h]);
			lc[j]=lc[j]+" "+auxiliary[target][h];
		}
		var testingWord=lc[0].toUpperCase();
		var testingMeaning=lc[1].toUpperCase();
		alert(testingWord+": "+testingMeaning+"\n 1s: "+lc[2]+"\n 2s: "+lc[3]+"\n 3s: "+lc[4]+"\n 1p: "+lc[5]+"\n 2p: "+lc[6]+"\n 3p: "+lc[7]);
	}


}


function proofEtre() {
	for (i=0; i<infinitive.length; i++) {
		for (m=0;m<tobe.length;m++) {
			if (infinitive[i]==tobe[m]) {
				match=true;
			}
		}

		lc=new Array(infinitive[i],meaning[i],yo[i],tu[i],ella[i],nosotros[i],vosotros[i],ellas[i]);
		lc_endings=new Array('(e)','(e)','(e)','(s)(es)','(s)(es)','(s)(es)');
		if (match==true) {
			for (j=2;j<lc.length;j++) {
				var h=j-2;
				lc[j]=lc[j]+" "+lc_endings[h];
			}
		}
		var testingWord=lc[0].toUpperCase();
		var testingMeaning=lc[1].toUpperCase();
		alert(testingWord+": "+testingMeaning+"\n 1s: "+lc[2]+"\n 2s: "+lc[3]+"\n 3s: "+lc[4]+"\n 1p: "+lc[5]+"\n 2p: "+lc[6]+"\n 3p: "+lc[7]);
	}


}


function allVariables() {
attempted=0;
	correct=0;
alert("By pressing this button, you have reset your grade to 0%");
	var heading="Use these variables to check for error: \n";
	var myPronoun="\nPronoun: "+pronoun;
	var myVerb="\nVerb #: "+verb;
	var myInf="\nLength of verb list: "+infinitive.length;
	var myInf2="\nLength of selected verb list: "+selectedinfinitive.length;
	var myVerb2="\nInfinitive: "+infinitive[verb];
	var mySelectedVerb="\nSelected verb: "+selectedinfinitive[verb];
	var mySolution="\nSolution: "+solution;

	alert(heading+myPronoun+myVerb+myInf+myInf2+myVerb2+mySelectedVerb+mySolution);
	
}

function microsoftReturn() {
	bName=navigator.appName;
	if (bName=="Microsoft Internet Explorer") {
		key=event.keyCode;
		if (key==13) {
		checkAnswer();
		event.returnValue=false
		}
		if (key==68) {
		allVariables();
		event.returnValue=false
		}
		return
		
		if (key==90) {
			alert ("You are about to check all of the conjugations.");


			if (commands=="yes") {
				for (i=0; i<infinitive.length; i++) {
				var testingWord=infinitive[i].toUpperCase();
				var testingMeaning=meaning[i].toUpperCase();
				alert(testingWord+": "+testingMeaning+"\n positive command: "+positive[i]+"\n negative command: "+negative[i]);
				}

			}
			else {
				proofcheck();
				event.returnValue=false

			}

		}
	}
}
window.onkeypress=netscapeReturn;