var theNumOfWords = 0;
var theNumOfAskWords = 0;

function AddWord()
{
	var theForm = self.document.Eingabe;
	
	if ((theForm.Wort == '')||(theForm.Sing.value == '')||(theForm.Uebersetzung.value == ''))
	{
		alert('Sie muessen alle Felder fuellen, bevor das Wort hinzugefuegt werden darf!');
		return;
	}	// if

	theForm.WortFeld.value += '<param name="wort'+theNumOfWords++ +'" value="' +theForm.Wort.value+','+theForm.Sing.value+','+
((theForm.Perf.value=="")?"-":theForm.Perf.value)+','+((theForm.PVP.value=="")?"-":theForm.PVP.value)
+','+theForm.Konjugation.options[theForm.Konjugation.selectedIndex].value+','
+(theForm.deponens.checked?'d':(theForm.intransitiv.checked?'i':'t'))
+','+ theForm.Uebersetzung.value+'" />\n';

	theForm.Wort.value = '';
	theForm.Sing.value = '';
	theForm.Perf.value = '';
	theForm.PVP.value = '';
	theForm.Uebersetzung.value = '';
	theForm.intransitiv.checked = false;
	theForm.deponens.checked = false;
}	// AddWord

function GetAskWord()
{
	var theForm =  self.document.Eingabe;
	var theAskWord = theForm.AskWord.value;
	var theIndex = theForm.WortFeld.value.indexOf(theAskWord);

	if (theIndex != -1)
	{
		for (i = theIndex-1;i>0;i--)
		{
			if (theForm.WortFeld.value.charAt(i) == "t")
				break;
		}	// for
		theFirstIndex = i+1;

		for (i=theFirstIndex;i<theIndex;i++)
		{
			if (theForm.WortFeld.value.charAt(i) == '"')
				break;
		}	// for
		theLastIndex = i;

		return theForm.WortFeld.value.substring(theFirstIndex,theLastIndex);
	}	// if
	else return -1;
}	// GetAskWord

function AddAskWord()
{
	var theForm = self.document.Eingabe;
	var thePerson, theModus, theTempus, theGenus;
		
	var theAskWord = GetAskWord();

	if (theAskWord < 0)
	{
		alert('Das Wort "' + theForm.AskWord.value + '" befindet sich nicht in der Woerterliste!\nEs kann daher nicht in die Aufgaben uebernommen werden!');
		return;
	}	// if

	thePerson = theForm.AskPerson.options[theForm.AskPerson.selectedIndex].value;
	theTempus = theForm.AskTempus.options[theForm.AskTempus.selectedIndex].value;
	theModus = theForm.AskModus.options[theForm.AskModus.selectedIndex].value;
	theGenus = theForm.AskGenus.options[theForm.AskGenus.selectedIndex].value;
	
	if ((theModus == 'konj') &&((theTempus == 'fut')||(theTempus == 'perffut')))
	{
		alert('Es gibt keinen Konjunktiv Futur (bzw. Perfektfutur)!');
		return;
	}	// if
	
	if ((theModus == 'imper') &&((thePerson != '2')||(theTempus != 'praes')||(theGenus != 'akt')))
	{
		alert('Der Imperativ kommt nur in der 2. Sg. oder Pl. des Praesens aktiv vor!');
		return;
	}	// if
	
	
	theForm.AskWortFeld.value += '<param name="ask'+theNumOfAskWords++ +'" value="' +theAskWord+','+
thePerson+','+
theForm.AskNumerus.options[theForm.AskNumerus.selectedIndex].value+','+ theModus+','+ theTempus+','+ theGenus+','+
theForm.AskDir.options[theForm.AskDir.selectedIndex].value+'" />\n';
}	// AddAskWord

function GetWeights()
{
	var theForm = self.document.Eingabe;
	
	if ((!theForm.praes.checked && (parseInt(theForm.praesens.value) != 0))||
		(!theForm.impf.checked && (parseInt(theForm.imperfekt.value) != 0))||
		(!theForm.perf.checked && (parseInt(theForm.perfekt.value) != 0))||
		(!theForm.perffut.checked && (parseInt(theForm.perfektfutur.value) != 0))||
		(!theForm.plqpf.checked && (parseInt(theForm.plusquamperfekt.value) != 0))||
		(!theForm.fut.checked && (parseInt(theForm.futur.value) != 0)))
	{
		alert('Sie haben Tempora fuer die gewichtete Abfrage verwendet, die Sie sonst nicht ausgewaehlt haben!');
		return -1;
	}	// if
	
	if ((!theForm.ind.checked && (parseInt(theForm.indikativ.value) != 0))||
		(!theForm.konj.checked && (parseInt(theForm.konjunktiv.value) != 0))||
		(!theForm.imper.checked && (parseInt(theForm.imperativ.value) != 0)))
	{
		alert('Sie haben Modi fuer die gewichtete Abfrage verwendet, die Sie sonst nicht ausgewaehlt haben!');
		return -1;	
	}	// if

	if ((!theForm.akt.checked && (parseInt(theForm.aktiv.value) != 0))||
		(!theForm.mediopass.checked && (parseInt(theForm.mediopassiv.value) != 0)))
	{
		alert('Sie haben ein Genus verbi fuer die gewichtete Abfrage verwendet, das Sie sonst nicht ausgewaehlt haben!');
		return -1;	
	}	// if
		
	if (parseInt(theForm.praesens.value) + parseInt(theForm.imperfekt.value) + parseInt(theForm.futur.value) + parseInt(theForm.perfekt.value) + parseInt(theForm.plusquamperfekt.value) + parseInt(theForm.perfektfutur.value) != 100)
	{
		alert('Die Prozentzahlen fuer Tempora muessen zusammen 100 ergeben!');
		return -1;
	}	// if
	
	if (parseInt(theForm.indikativ.value) + parseInt(theForm.konjunktiv.value) + parseInt(theForm.imperativ.value) != 100)
	{
		alert('Die Prozentzahlen fuer Modi muessen zusammen 100 ergeben!');
		return -1;
	}	// if	

	if (parseInt(theForm.aktiv.value) + parseInt(theForm.mediopassiv.value) != 100)
	{
		alert('Die Prozentzahlen fuer Genera muessen zusammen 100 ergeben!');
		return -1;
	}	// if
	
	return '<param name="tempora" value="' + parseInt(theForm.praesens.value) + ','+ parseInt(theForm.imperfekt.value) + ',' + parseInt(theForm.futur.value) + ',' + parseInt(theForm.perfekt.value) + ',' + parseInt(theForm.plusquamperfekt.value) + ',' + parseInt(theForm.perfektfutur.value) + '" />\n<param name="modi" value="' + parseInt(theForm.indikativ.value) + ',' + parseInt(theForm.konjunktiv.value) + ',' + parseInt(theForm.imperativ.value) + '" />\n<param name="genera" value="' + parseInt(theForm.aktiv.value) + ',' + parseInt(theForm.mediopassiv.value) + '" />';
}	// GetWeights

function GetParams()
{
	var theForm = self.document.Eingabe;
	var theText;
	var theFormen, theTempus, theModus, theGenus;

	theFormen = (theForm.Pers.checked?'3. Pers,':'');
	
	theTempus = (theForm.praes.checked?'praes,':'')+(theForm.impf.checked?'impf,':'')+ (theForm.fut.checked?'fut,':'')+(theForm.perf.checked?'perf,':'') +(theForm.plqpf.checked?'plqpf,':'') +(theForm.perffut.checked?'perffut,':'');
	if (theTempus == '')
	{
		alert('Sie muessen mindestens ein Tempus auswaehlen!');
		return '';
	}	// if

	theModus = (theForm.ind.checked?'ind,':'')+(theForm.konj.checked?'konj,':'')+ (theForm.imper.checked?'imper,':'');
	if (theModus == '')
	{
		alert('Sie muessen mindestens einen Modus auswaehlen!');
		return '';
	}	// if

	theGenus = (theForm.akt.checked?'akt,':'')+(theForm.mediopass.checked?'mediopass,':'');
	if (theGenus == '')
	{
		alert('Sie muessen mindestens ein Genus verbi auswaehlen!');
		return '';
	}	// if
	
	if (((theForm.imper.checked) && (!theForm.ind.checked) && (!theForm.konj.checked))&& ((!theForm.akt.checked)||(!theForm.praes.checked)||(theForm.Pers.checked)))
	{
		alert('Sie koennen den Modus "Imperativ" nur verwenden, wenn gleichzeitig "Praesens" und "Aktiv" eingestellt und die "3. Person" nicht eingestellt sind!');
		return '';
	}	// if
		
	theFormen += theTempus + theModus + theGenus;
	if (theFormen.charAt(theFormen.length-1) == ',')
		theFormen = theFormen.substring(0,theFormen.length-1);
	theText = '<param name="short" value="' + theForm.Short.options[theForm.Short.selectedIndex].value + '" />\n';
	theText += '<param name="modus" value="' + theForm.Modus.options[theForm.Modus.selectedIndex].value + '" />\n';
	 theText += '<param name="formen" value="'+theFormen+'" />\n';
	 
	 if (theForm.useWeights.checked)
	 {
	 	var theWeights;
	 	
	 	theWeights = GetWeights();
	 	
	 	if (theWeights == -1)
	 		return '';
	 		
	 	theText += theWeights;
	 }	// if

	if (theForm.ziel.checked)
	{
		if ((theForm.minpercents.value < 1)||(theForm.minpercents.value > 101))
		{
			alert('Sie muessen bei den Prozenten eine Zahl zwischen 1 und 100 eingeben!');
			return '';
		}	// if
		if (theForm.minexercices.value < 1)
		{
			alert('Sie muessen mindestens 1 Form als Ziel definieren!');
			return '';
		}	// if
		theText += '<param name="ziel" value="' + theForm.minexercices.value + ',' + theForm.minpercents.value + '" />\n';
	}	// if

	theText += '<param name="book" value="' + theForm.book.value + '" />\n';
	theText += '<param name="lesson" value="' + theForm.lesson.value + '" />\n';

	return theText;
}	// GetParams

function Get2000Year(theDate)
{
	var theYear = theDate.getYear();
	
	if (theYear < 1000)
		theYear += 1900;
		
	return theYear;
}	// Get2000Year

function GetFooter()
{
	var theDate = new Date();
	var theForm = self.document.Eingabe;

	return '<hr /><p>Um die &Uuml;bung zu beenden, schliessen Sie bitte das Fenster.</p><hr /><p>Letzte &Auml;nderung: ' +theDate.getDate()+'.'+(1+theDate.getMonth())+'.'+Get2000Year(theDate)+ '</p>';
}	// GetFooter

function GetPrintData()
{
	var theForm = self.document.Eingabe;

	var displayNumOfSolutions = theForm.displayNumOfSolutions.checked;
	var useItalic = theForm.useItalic.checked;
	
	var theText = "";
	
	if (!((theForm.usePrint.checked)||(theForm.useFalsePrint.checked)||(theForm.useRandomPrint.checked)))
		return theText;
		
	theText = 	"<script language='JavaScript'>\n"+
				"<!--\n";

	// LiveConnect testen
	theText += "var isLiveConnect;\n\n";
	theText += "function TestLiveConnect()\n";
	theText += "{\n";
	theText += "isLiveConnect = false;\n";
	theText += "try\n";
	theText += "{\n";
	theText += "document.Verba.GetRandomWord();\n";
	theText += "}\n";
	theText += "catch (error)\n";
	theText += "{\n";
	theText += "document.getElementById(999).innerHTML = \"\";\n";
	theText += "return;\n";
	theText += "}\n";
	theText += "isLiveConnect = true;\n";
	theText += "}\n";
	
	if ((theForm.usePrint.checked)||(theForm.useFalsePrint.checked))
	{		
		theText +=	"function PrintExercice(onlyFalse)\n" +
					"{\n";
		theText += "if (!isLiveConnect)\n" +
					"{\n" +
					"alert('Ihr Browser unterstuetzt die Verbindung zum Java-Applet nicht. Diese Funktion steht daher nicht zur Verfuegung.');\n" +
					"return;\n" +
					"}	// if\n";

		theText +=		"var theNumOfExercices = -1;\n" +
						"var theIndex = 1;\n" +
						"var theText;\n" +		
				
						"if (onlyFalse)\n" +
							"theNumOfExercices = document.Verba.GetNumOfRandomExercices();\n" +
						"if (theNumOfExercices < 0)\n" +
							"theNumOfExercices = document.Verba.GetNumOfExercices();\n" +
		
						"var theDocument='<html><head><title>' + document.title + '</title></head><body>' + '<h1>' + document.title + '</h1><h3>Aufgaben</h3><p>';\n" +
						"for (i=0;i<theNumOfExercices;i++)\n" +
						"{\n" +
							"theText = onlyFalse?document.Verba.GetFalseExercice(i,"+displayNumOfSolutions+","+useItalic+"):document.Verba.GetExercice(i,"+displayNumOfSolutions+","+useItalic+");\n" +
			
							"if (theText != '')\n" +
								"theDocument += (theIndex++) +'. ' + theText + '<br />';\n" +
						"}	// for\n" +
				
						"theDocument += '</p><hr /><h3>L&ouml;sungen</h3><p>';\n" +
		
						"theIndex = 1;\n" +
						"for (i=0;i<theNumOfExercices;i++)\n" +
						"{\n" +
							"theText = onlyFalse?document.Verba.GetFalseSolution(i,"+useItalic+"):document.Verba.GetSolution(i,"+useItalic+");\n" +
			
						"if (theText != '')\n" +
							"theDocument += (theIndex++) +'. ' + theText + '<br />';\n" +
						"}	// for\n" +
			
						"theDocument += '</p><hr /><div style="+'"text-align: right;"'+">&copy; by L. Hartmann, Hinwil 2006</div></body></html>';\n" +
		
						"var theWindow = self.open('','Neues_Dokument');\n" +
						"theWindow.document.write(theDocument);\n" +
						"theWindow.document.close();\n" +
		
					"}	// PrintExercice\n";
	}	// if
		
	if (theForm.useRandomPrint.checked)
	{
		theText += 	"function PrintRandomExercice()\n" +
					"{\n";
					
		theText += "if (!isLiveConnect)\n" +
					"{\n" +
					"alert('Ihr Browser unterstuetzt die Verbindung zum Java-Applet nicht. Diese Funktion steht daher nicht zur Verfuegung.');\n" +
					"return;\n" +
					"}	// if\n";

		theText +=	"var theTempNumOfExercices = prompt('Bitte geben Sie die Anzahl Aufgaben ein!','20');\n" +
		
					"if (theTempNumOfExercices == null)\n" +
						"return;\n" + 
		
					"var theNumOfExercices = parseInt(theTempNumOfExercices);\n" + 
		
					"if (theNumOfExercices == NaN)\n" + 
						"return;\n" +
		
					"var theDocument = '<html><head><title>' + document.title + '</title></head><body>' + '<h1>' + document.title + '</h1><h3>Aufgaben</h3><p>';\n" +
		
					"var theWords = new Array(theNumOfExercices);\n" +
					"var theCNGs = new Array(theNumOfExercices);\n" +
								
					"for (i=1;i<=theNumOfExercices;i++)\n" +
					"{\n" +
						"theWords[i-1] = document.Verba.GetRandomWord();\n" +
						"theCNGs[i-1] = document.Verba.GetRandomAsk(theWords[i-1]);\n" +
						"theDocument += i+'. '+document.Verba.GetRandomExercice(theWords[i-1], theCNGs[i-1],"+displayNumOfSolutions+","+useItalic+") + '<br />';\n" +
					"}	// for\n" +
		
					"theDocument += '</p><hr /><h3>L&ouml;sungen</h3><p>';\n" +
		
					"for (i=1;i<=theNumOfExercices;i++)\n" +
						"theDocument += i+'. '+document.Verba.GetRandomSolution(theWords[i-1], theCNGs[i-1],"+useItalic+") + '<br />';\n" +
			
					"theDocument += '</p><hr /><div style="+'"text-align: right;"'+">&copy; by L. Hartmann, Hinwil 2006</div></body></html>';\n" +
		
					"var theWindow = self.open('','Neues_Dokument');\n" +
					"theWindow.document.write(theDocument);\n" +
					"theWindow.document.close();\n" +
		
				"}	// PrintRandomExercice\n";
	}	// if
	
	theText += "document.write('<div id=\"999\" style=\"margin-top: 1em;\"><form>');\n";

	if (theForm.usePrint.checked)
		theText += "document.write('"+'<input type="button" value="&Uuml;bung drucken..." onClick="PrintExercice(false)" />'+" ');\n";

	if (theForm.useFalsePrint.checked)
		theText += "document.write('" +'<input type="button" value="Falsche drucken..." onClick="PrintExercice(true)" />'+" ');\n";

	if (theForm.useRandomPrint.checked)
		theText += "document.write('" +'<input type="button" value="Zuf&auml;llige &Uuml;bung drucken..." onClick="PrintRandomExercice()" />'+"');\n";

	theText += "document.write('</form> <span style=\"font-size: 0.8em;\">(funktioniert nur mit \"LiveConnect\")</span></div>');\n" +
			"// -->\n" +
			"</" + "script>\n\n<hr />\n";
	return theText;
}	// GetPrintData


function CreateFile()
{
	var theForm = self.document.Eingabe;

	var theParams = GetParams();
	if (theParams == '')
		return;
	
	var theTitle = theForm.Titel.value;
	
	if (theTitle == '')
		theTitle = 'Verba-&Uuml;bung';

	var theText = '<html><head><title>'+theTitle+'</title></head><body style="background-color: white;" onload="TestLiveConnect();"><h1>'+theTitle+'</h1><hr />'+ GetPrintData() +
	'<applet name="Verba" code="Verba.class" alt="Verba (Java-Applet)" width="553" height="289" archive="'+theForm.javaurl.value+'Verba.jar">\n'+
	theForm.WortFeld.value+'\n' +
	theForm.AskWortFeld.value+'\n' +
	theParams+'\nDas Applet "Verba" funktioniert nur, wenn Ihr Browser Java unterst&uuml;tzt.</applet>\n' +
	'<p style="text-align: right; font-size: 0.8em;">&copy; by L. Hartmann, Hinwil 2006</p>'+
	GetFooter()+'\n</body></html>';
		
	var theWindow = self.open("","Neues_Dokument2");
	theWindow.document.write(theText);
	theWindow.document.close();
}	// CreateFile

function SelectAll()
{
	var theForm = self.document.Eingabe;
	
	theForm.praes.checked = true;
	theForm.impf.checked = true;
	theForm.perf.checked = true;
	theForm.plqpf.checked = true;
	theForm.fut.checked = true;
	theForm.perffut.checked = true;
	
	theForm.imper.checked = true;
	theForm.ind.checked = true;
	theForm.konj.checked = true;
	
	theForm.akt.checked = true;
	theForm.mediopass.checked = true;
	
	theForm.Pers.checked = false;
}	// SelectAll