var squareObjects=new Array();var level=1;var countSquares=[36,36,34,32,31,30];var gameFinished=false;var alopgelost='nee';var foutopgelost='nee';var statsAantalHints=0;var statsAantalHelps=0;function shuffleBoard()
{for(var counter=0;counter<30;counter++){var number1=Math.ceil(Math.random()*9);var number2=Math.ceil(Math.random()*9);while(number2==number1){number2=Math.ceil(Math.random()*9);}
var tmpObjects1=new Array();var tmpObjects2=new Array();for(var no=0;no<squareObjects.length;no++){var txtObj=squareObjects[no].getElementsByTagName('SPAN')[0];if(txtObj.innerHTML==number1)tmpObjects1.push(txtObj);if(txtObj.innerHTML==number2)tmpObjects2.push(txtObj);}
for(var no=0;no<tmpObjects1.length;no++){tmpObjects1[no].innerHTML=number2;tmpObjects2[no].innerHTML=number1;}}
resetVisibleNumberArray();showColumnsInGroup();}
function resetVisibleNumberArray()
{for(var no=0;no<=9;no++){visibleNumberArray[no]=0;}}
function newGame()
{var obj=document.getElementById('sudoku');var subObjects=obj.getElementsByTagName('DIV');for(var no=0;no<subObjects.length;no++){if(subObjects[no].className=='sudokuhokje'){subObjects[no].style.backgroundColor='';var spans=subObjects[no].getElementsByTagName('SPAN');spans[0].style.display='none';spans[1].innerHTML='';}}}
var visibleNumberArray=new Array();function randomizeArray(a,b){return Math.random()-Math.random();}
function showCell(inputDiv)
{var span=inputDiv.getElementsByTagName('SPAN')[0];span.style.display='';inputDiv.style.backgroundColor='#DDD';span.style.color='#317082';var typingSpan=inputDiv.getElementsByTagName('SPAN')[1];typingSpan.style.display='none';}
function showColumnsInGroup(){var object=document.getElementById('sudoku');var cellsRevealed=new Array();var numberArray=new Array();var groupCountArray=new Array();var maxInGroup=5;if(level<=0)level=1;if(level==1)maxInGroup=4;for(var no=0;no<countSquares[level];no++){do{var row=Math.floor(Math.random()*9);var col=Math.floor(Math.random()*9);var obj=document.getElementById('hokje_'+row+'_'+col);var parentID=obj.parentNode.id;var span=obj.getElementsByTagName('SPAN')[0];if(!numberArray[span.innerHTML])numberArray[span.innerHTML]=0;if(!groupCountArray[parentID])groupCountArray[parentID]=0;}while(cellsRevealed[row+'_'+col]||numberArray[span.innerHTML]>(3+Math.ceil(level/2))||groupCountArray[parentID]>=maxInGroup);cellsRevealed[row+'_'+col]=true;if(!numberArray[span.innerHTML])numberArray[span.innerHTML]=0;numberArray[span.innerHTML]++;groupCountArray[parentID]++;showCell(obj);}}
var higlightedCell;function highlightSquare(e,inputObj){document.getElementById('hintDiv').style.display='none';if(!inputObj)inputObj=this;if(inputObj.style.backgroundColor)return;if(gameFinished)return;inputObj.className='sudokuhokjeHighlighted';if(higlightedCell&&higlightedCell!=inputObj)higlightedCell.className='sudokuhokje';higlightedCell=inputObj;if(document.all)inputObj.focus();}
function laadExternBestand(bestandsnaam,type){if(type=="js"){var fileref=document.createElement('script')
fileref.setAttribute("type","text/javascript")
fileref.setAttribute("src",bestandsnaam)}
else if(type=="css"){var fileref=document.createElement("link")
fileref.setAttribute("rel","stylesheet")
fileref.setAttribute("type","text/css")
fileref.setAttribute("href",bestandsnaam)}
if(typeof fileref!="undefined")
document.getElementsByTagName("head")[0].appendChild(fileref)}
function isGameFinished()
{var obj=document.getElementById('sudoku');var subDivs=obj.getElementsByTagName('DIV');var allOk=true;for(var no=0;no<subDivs.length;no++){if(subDivs[no].className.indexOf('sudokuhokje')>=0&&!subDivs[no].style.backgroundColor){var spans=subDivs[no].getElementsByTagName('SPAN');if(spans[0].innerHTML!=spans[1].innerHTML){allOk=false;break;}}}
if(allOk){if(alopgelost=='nee'){if(statsAantalHints!=0){HintGebruikt='ja';}else{HintGebruikt='nee';}
if(statsAantalHelps!=0){HelpGebruikt='ja';}else{HelpGebruikt='nee';}
var bestand_include='stats.php?opgelost=ja&moeilijkheid='+level+'&aantalhints='+statsAantalHints+'&aantalhelps='+statsAantalHelps+'&lang=nl';laadExternBestand(bestand_include,'js');}
alopgelost=='ja';alert('Gefeliciteerd! De sudoku is succesvol opgelost');}}
function initSudoku()
{alopgelost='nee';foutopgelost='nee';statsAantalHints=0;statsAantalHelps=0;gameFinished=false;document.getElementById('hintDiv').style.display='none';var matrix=new Array();for(var rowCounter=0;rowCounter<9;rowCounter++){matrix[rowCounter]=new Array();for(var colCounter=0;colCounter<9;colCounter++){var number=colCounter/1+1+(rowCounter*3)+Math.floor(rowCounter/3)%3;if(number>9)number=number%9;if(number==0)number=9;matrix[rowCounter][colCounter]=number;}}
for(var no=0;no<9;no+=3){for(var no2=0;no2<3;no2++){row1=Math.floor(Math.random()*3);row2=Math.floor(Math.random()*3);while(row2==row1){row2=Math.floor(Math.random()*3);}
row1=row1+no;row2=row2+no;var tmpMatrix=new Array();tmpMatrix=matrix[row1];matrix[row1]=matrix[row2];matrix[row2]=tmpMatrix;}}
for(var no=0;no<9;no+=3){for(var no2=0;no2<3;no2++){col1=Math.floor(Math.random()*3);col2=Math.floor(Math.random()*3);while(col2==col1){col2=Math.floor(Math.random()*3);}
col1=col1+no;col2=col2+no;var tmpMatrix=new Array();for(var no3=0;no3<matrix.length;no3++){tmpMatrixValue=matrix[no3][col1];matrix[no3][col1]=matrix[no3][col2];matrix[no3][col2]=tmpMatrixValue;}}}
for(var no=0;no<matrix.length;no++){for(var no2=0;no2<matrix[no].length;no2++){var obj=document.getElementById('hokje_'+no+'_'+no2);var spanObjects=obj.getElementsByTagName('SPAN');var span=spanObjects[0];span.innerHTML=matrix[no][no2];span.style.display='none';spanObjects[1].innerHTML='';spanObjects[1].style.display='';spanObjects[1].style.color='#000';obj.onclick=highlightSquare;squareObjects.push(obj);}}
if(document.all){document.body.onkeydown=insertNumber;}else{document.documentElement.onkeydown=insertNumber;}
newGame();shuffleBoard();}
function startNewGame(){if(confirm('Weet je zeker dat je een nieuw spel wilt starten?')){initSudoku();}}
function insertNumber(e)
{document.getElementById('hintDiv').style.display='none';if(document.all)e=event;if(!higlightedCell)return;if(gameFinished)return;if(e.keyCode)code=e.keyCode;else if(e.which)code=e.which;var span=higlightedCell.getElementsByTagName('SPAN')[1];var numbers=higlightedCell.id.split('_');var row=numbers[1]/1;var col=numbers[2]/1;var nextObject=false;if(code==39){if(col<8){nextObject=document.getElementById('hokje_'+row+'_'+(col/1+1));if(nextObject.style.backgroundColor){while(col<8&&nextObject.style.backgroundColor){col=col+1;nextObject=document.getElementById('hokje_'+row+'_'+col);}}}}
if(code==37){if(col>0){nextObject=document.getElementById('hokje_'+row+'_'+(col/1-1));if(nextObject.style.backgroundColor){while(col>0&&nextObject.style.backgroundColor){col=col-1;nextObject=document.getElementById('hokje_'+row+'_'+col);}}
if(nextObject.style.backgroundColor)nextObject=false;}}
if(code==38){if(row>0){nextObject=document.getElementById('hokje_'+(row-1)+'_'+col);if(nextObject.style.backgroundColor){while(row>0&&nextObject.style.backgroundColor){row=row-1;nextObject=document.getElementById('hokje_'+row+'_'+col);}}}}
if(code==40){if(row<8){nextObject=document.getElementById('hokje_'+(row+1)+'_'+col);if(nextObject.style.backgroundColor){while(row<8&&nextObject.style.backgroundColor){row=row+1;nextObject=document.getElementById('hokje_'+row+'_'+col);}}}}
if(nextObject){highlightSquare(false,nextObject);}
if(code==46||code==8){span.innerHTML='';if(code==8)return false;}
if(code>96&&code<=105)code-=48;if(code>48&&code<=57){var theChar=String.fromCharCode(code);span.innerHTML=theChar;}
isGameFinished();}
function helpMe()
{if(gameFinished)return false;if(confirm('Zal ik een getal voor je tonen?')){var allreadyRevealed=true;var counter=0;do{var row=Math.floor(Math.random()*9);var col=Math.floor(Math.random()*9);var el=document.getElementById('hokje_'+row+'_'+col);var spans=el.getElementsByTagName('SPAN');if(spans[1].innerHTML.length==0){spans[1].innerHTML=spans[0].innerHTML;spans[1].style.color='#FF0000';allreadyRevealed=false;}
if(el.style.backgroundColor)allreadyRevealed=true;counter++}while(allreadyRevealed&&counter<500);}
isGameFinished();statsAantalHelps=statsAantalHelps+1;}
function isCorrect(divObj)
{var spans=divObj.getElementsByTagName('SPAN');if(spans[0].innerHTML==spans[1].innerHTML||spans[1].innerHTML.length==0)return true;return false;}
function getTopPos(inputObj)
{var returnValue=inputObj.offsetTop;while((inputObj=inputObj.offsetParent)!=null){returnValue+=inputObj.offsetTop;}
return returnValue;}
function getLeftPos(inputObj)
{var returnValue=inputObj.offsetLeft;while((inputObj=inputObj.offsetParent)!=null)returnValue+=inputObj.offsetLeft;return returnValue;}
function getPossibleNumbers(inputObj)
{var noArray=new Array();var countNumbers=0;var spans=inputObj.getElementsByTagName('SPAN');if(spans[0].innerHTML==spans[1].innerHTML)return 0;var parentDiv=inputObj.parentNode;var subDivs=parentDiv.getElementsByTagName('DIV');for(var no=0;no<subDivs.length;no++){if(subDivs[no]!=inputObj){var spans=subDivs[no].getElementsByTagName('SPAN');if(spans[0].innerHTML==spans[1].innerHTML||subDivs[no].style.backgroundColor.length>1){if(!noArray[spans[0].innerHTML]){noArray[spans[0].innerHTML]=true;countNumbers++;}}}}
var numbers=inputObj.id.split('_');var row=numbers[1];var col=numbers[2];for(var no=0;no<9;no++){var obj=document.getElementById('hokje_'+row+'_'+no);if(obj!=inputObj){var spans=obj.getElementsByTagName('SPAN');if(spans[0].innerHTML==spans[1].innerHTML||!spans[0].style.display){if(!noArray[spans[0].innerHTML]){noArray[spans[0].innerHTML]=true;countNumbers++;}}}
var obj=document.getElementById('hokje_'+no+'_'+col);if(obj!=inputObj){var spans=obj.getElementsByTagName('SPAN');if(spans[0].innerHTML==spans[1].innerHTML||!spans[0].style.display){if(!noArray[spans[0].innerHTML]){noArray[spans[0].innerHTML]=true;countNumbers++;}}}}
return countNumbers;}
function showHint()
{var hintDiv=document.getElementById('hintDiv');var hintDivInner=hintDiv.getElementsByTagName('DIV')[0];var maxExistingNo=0;var objectToTry=false;for(var row=0;row<9;row++){for(var col=0;col<9;col++){var obj=document.getElementById('hokje_'+row+'_'+col);if(obj.style.backgroundColor)continue;if(!isCorrect(obj)){hintDivInner.innerHTML='<center>Deze klopt niet:</center>';hintDiv.style.left=getLeftPos(obj)+'px';hintDiv.style.top=getTopPos(obj)-50+'px';hintDiv.style.display='block';return;}
var existingNumbers=getPossibleNumbers(obj);if(existingNumbers>maxExistingNo){maxExistingNo=existingNumbers;objectToTry=obj;}}}
if(objectToTry){hintDivInner.innerHTML='<center>Probeer deze: </center>';hintDiv.style.left=getLeftPos(objectToTry)+'px';hintDiv.style.top=getTopPos(objectToTry)-50+'px';hintDiv.style.display='block';}
statsAantalHints=statsAantalHints+1;}
function revealAll()
{if(confirm('Weet je zeker dat je de oplossing wilt zien?')){for(var row=0;row<9;row++){for(var col=0;col<9;col++){var obj=document.getElementById('hokje_'+row+'_'+col);var spans=obj.getElementsByTagName('SPAN');spans[0].style.display='';spans[1].style.display='none';spans[1].style.color='#000000';}}
gameFinished=true;}}
function switchLevel(initLevel,linkObj)
{var confirmSwitch=gameFinished;if(!confirmSwitch)confirmSwitch=confirm('Als je op OK klikt wordt het huidige spel beëindigd en de moeilijkheid veranderd.');if(confirmSwitch){var parentObj=linkObj.parentNode.parentNode;var links=parentObj.getElementsByTagName('A');for(var no=0;no<links.length;no++){links[no].style.fontWeight='normal';}
linkObj.style.fontWeight='bold';level=initLevel;setTimeout('initSudoku()',20);}}
window.onload=initSudoku;