/***************************************************************************

	Author 			:Charles B. Cossé 
	
	Email			:ccosse@gmail.com
					
	Copyright		:(C) 2001-2007 Asymptopia Software.
	
	Package			:Asymptopia Math Crossword Builder
	
	Version			:2.6
	
	License			:Gnu Public License (GPL)
	
	
 ***************************************************************************/
/***************************************************************************
                          cwp_table_stuff.js

	Description: generates key,puzzle and hints pages

 ***************************************************************************/
var allow_disconnected=0;
var cells=null;
var rows=null;
var pcells=null;
var prows=null;
var across_list=new Array();
var down_list=new Array();
var HintDiv=null;
var success_label=document.createTextNode("");
var gbs;

CELLSIZE=30;
DEFAULT_IMAGE="images/blank.jpeg";
DEFAULT_STR="blank";
function update_success_string(){
	num_used=get_used().length;
	total=get_total();
	rval=num_used+"/"+total;
	return(rval);
}
function do_toggle(e){
	//alert("do_toggle");
	b=document.getElementById("allow_disconnected_button");
	if(allow_disconnected==0){
		allow_disconnected=1;
		b.checked=allow_disconnected;
	}
	else{
		allow_disconnected=0;
		b.checked=allow_disconnected;
	}
}
function make_generate_button_div(){
	gbt=document.createElement("table");
	
	gbr=gbt.insertRow(-1);
	gbx=gbr.insertCell(0);
	gbc=gbr.insertCell(1);
	gbs=gbr.insertCell(2);//gbs ~ "generate_button_success"
	gbs.style.width="40";
	gbs.style.fontWeight="bold";
	gbs.align="right";
	gbt.style.backgroundColor="AAAAAA";
	gbt.style.color="0000AA";
	gbt.style.fontSize="12px";
	
	gr1=document.createElement("input");
	gr1.id="allow_disconnected_button"; 
	gr1.type="radio";
	gr1.checked=allow_disconnected;
	if(navigator.appName=="Microsoft Internet Explorer")gr1.attachEvent("onclick",do_toggle);
	else gr1.addEventListener("click",do_toggle,false);
	gbx.appendChild(gr1);
	
	gb=document.createElement("input");
	gb.id="generate_button"; 
	gb.type="submit";//calls add_keyword_to_session
	if(navigator.appName=="Microsoft Internet Explorer")gb.attachEvent("onclick",generate);
	else gb.addEventListener("click",generate,false);
	gb.value="Generate!";
	gb.style.width="200";
	gbc.appendChild(gb);
	
	success_string=update_success_string();
	success_label.appendData(success_string);
	gbs.appendChild(success_label);
	
	div=document.createElement("div");
	div.style.position="absolute";
	div.style.top=TOP-2;
	div.appendChild(gbt);

	var winwidth = window.document.width || window.document.body.clientWidth;
	div.style.left=(winwidth-200)/2.-25;
	
	return(div);
}
function setup_cwp_table(m,n,cellsize,default_src,default_str,which_table){

	theTable=document.createElement("table");
	theTable.cellPadding="0";
	theTable.cellSpacing="0";
	theTable.style.backgroundColor="AAAAAA";
	theTable.style.color="0000AA";
	//theTable.align="center";
	
	xrows=new Array();
	xcells=new Array();
	for(midx=0;midx<m;midx++){
		xcells[midx]=new Array();
		xrows[midx]=theTable.insertRow(-1);
		xrows[midx].align="right";
		for(nidx=0;nidx<n;nidx++){
			xcells[midx][nidx]=xrows[midx].insertCell(nidx);
			xcells[midx][nidx].bgColor="AAAAAA";
			xcells[midx][nidx].setAttribute("height",cellsize);
			xcells[midx][nidx].setAttribute("width",cellsize);
			xcells[midx][nidx].left=nidx*cellsize;
			xcells[midx][nidx].top=midx*cellsize;
			
			x=document.createElement("img");
			x.src=default_src;
			//document.images[default_str+"_"+midx+"_"+nidx]=x;
			//document.images["blank_"+midx+"_"+nidx]
			
			//if(midx==0 && nidx==0)alert(xcells[midx][nidx]);
			
			xcells[midx][nidx].appendChild(x);
			//if(navigator.appName=="Microsoft Internet Explorer")xcells[midx][nidx].appendChild(x);
			//else xcells[midx][nidx].appendChild(document.images[default_str+"_"+midx+"_"+nidx]);
			
			/*
			*/
			xcells[midx][nidx].str=default_str;
			xcells[midx][nidx].AMHEAD=0;
			xcells[midx][nidx].AMROWHEAD=0;
			xcells[midx][nidx].AMCOLHEAD=0;
			xcells[midx][nidx].AMCOL=0;
			xcells[midx][nidx].AMROW=0;
			xcells[midx][nidx].COL_WORD="";
			xcells[midx][nidx].ROW_WORD="";
			/**/
		}
	}
	
	div=document.createElement("div");
	div.style.position="absolute";
	div.style.position="absolute";
	div.style.top=TOP+30;
	
	var winwidth = window.document.width || window.document.body.clientWidth;
	div.style.left=(winwidth-CELLSIZE*n)/2.;
	
	div.appendChild(theTable);

	if(which_table==1){cells=xcells;rows=xrows;}
	else{pcells=xcells;prows=xrows;}
	return(div);
}
function make_update_puzzle_button_div(){
	upt=document.createElement("table");
	upr=upt.insertRow(-1);
	upc=upr.insertCell(0);
	//upt.align="center";
	upt.style.backgroundColor="AAAAAA";
	upt.style.color="0000AA";
	
	up=document.createElement("input");
	up.id="generate_button"; 
	if(navigator.appName=="Microsoft Internet Explorer")up.attachEvent("onclick",generate_puzzle);
	else up.addEventListener("click",generate_puzzle,false);
	//up.addEventListener("click",generate_puzzle,false);
	
	up.type="submit";//calls add_keyword_to_session
	up.value="Update Puzzle";
	up.style.width="200";
	upc.appendChild(up);
	
	div=document.createElement("div");
	div.style.position="absolute";
	div.style.top=TOP;
	
	var winwidth = window.document.width || window.document.body.clientWidth;
	div.style.left=(winwidth-200)/2.;
	
	div.appendChild(upt);
	return(div);
}
function make_update_hints_button_div(){
	uht=document.createElement("table");
	uht.cellPadding="1";
	uht.cellSpacing="1";
	uht.style.backgroundColor="AAAAAA";
	uht.style.color="0000AA";
	uht.style.width=400;
	
	uhr=uht.insertRow(-1);
	uhc=uhr.insertCell(0);
	
	uh=document.createElement("input");
	uh.id="generate_button"; 
	uh.type="submit";//calls add_keyword_to_session
	uh.value="Update Hints";
	uh.style.width="200";
	uh.style.alighn="center";
	if(navigator.appName=="Microsoft Internet Explorer")uh.attachEvent("onclick",generate_hints);
	else uh.addEventListener("click",generate_hints,false);
	uhc.appendChild(uh);
	
	div=document.createElement("div");
	div.style.position="absolute";
	div.style.top=TOP;

	var winwidth = window.document.width || window.document.body.clientWidth;
	div.style.left=(winwidth-200)/2;
	div.appendChild(uht);
	return(div);
}

function get_rand_idx(){return(Math.floor(Math.random()*get_words().length));}
function reset_table(m,n){
	for(midx=0;midx<m;midx++){
		for(nidx=0;nidx<n;nidx++){
			cells[midx][nidx].firstChild.src=DEFAULT_IMAGE;
			cells[midx][nidx].str=DEFAULT_STR;
			cells[midx][nidx].AMHEAD=0;
			cells[midx][nidx].AMROWHEAD=0;
			cells[midx][nidx].AMCOLHEAD=0;
			cells[midx][nidx].AMROW=0;
			cells[midx][nidx].AMCOL=0;
			cells[midx][nidx].ROW_WORD=null;
			cells[midx][nidx].COL_WORD=null;
			
			pcells[midx][nidx].firstChild.src=DEFAULT_IMAGE;
			pcells[midx][nidx].str=DEFAULT_STR;
			pcells[midx][nidx].AMHEAD=0;
			pcells[midx][nidx].AMROW=0;
			pcells[midx][nidx].AMCOL=0;
		}
	}
}
function advise1(){
	//update success label for last generation:
	gbs.removeChild(success_label);
	success_label=document.createTextNode(update_success_string());
	gbs.appendChild(success_label);
	alert("Bailing Out! There was difficulty fitting your words to the grid");
}
function advise2(){
	//update success label for last generation:
	gbs.removeChild(success_label);
	success_label=document.createTextNode(update_success_string());
	gbs.appendChild(success_label);
	alert("You did not press the \"ADD\" button in the ConfigPanel!");
}
function generate(){
	//cells.style.cursor = "wait";
	//cleanup tables & words:
	used2words();
	mrow=getMROW();
	ncol=getNCOL();
	try{reset_table(mrow,ncol);}
	//try{setup_cwp_table(getMROW(),getNCOL(),CELLSIZE,DEFAULT_IMAGE,DEFAULT_STR,1)}
	catch(ex){alert(ex);}	
	try{reset_table(getMROW(),getNCOL());}
	//try{setup_cwp_table(getMROW(),getNCOL(),CELLSIZE,DEFAULT_IMAGE,DEFAULT_STR,2)}
	catch(ex){alert(ex);}	
	
	start_with_row=Math.floor(Math.random()*2);
	if(get_words().length==0){advise2();return;}
	
	offset=4;
/*
//ORIGINAL SECTION: SEE BELOW FOR SAFARI STUPID UPSIDE-DOWN VERSION.
	while(1){
		offset--;
		m=Math.floor(Math.random()+Math.random()*offset);
		n=Math.floor(Math.random()+Math.random()*offset);
		if(m<0){advise1();return}
		if(n<0){advise1();return}
		
		rand_idx=get_rand_idx();
		keyval=remove_word_by_index(rand_idx);
		submission=keyval.split(":",2)[0];
		
		//alert(submission.length);
		
		if(submission.length<1){
			add_to_words(keyval);
			submission=null;
			continue;
		}
		if(start_with_row){
			if(n+submission.length>cells[0].length){
				add_to_words(keyval);
				submission=null;
				continue;
			}
		}
		if(!start_with_row){
			if(m+submission.length>rows.length){
				add_to_words(keyval);
				submission=null;
				continue;
			}
		}
		if(submission)break;
	}
	for(var sidx=0;sidx<submission.length;sidx++){
		if(start_with_row){
			if(submission.charAt(sidx)=="-"){cells[m][n+sidx].firstChild.src="images/dash.jpeg";}
			else{cells[m][n+sidx].firstChild.src="images/"+submission.charAt(sidx)+".jpeg";}
			
			//alert(submission.slice(sidx:sidx+1));
			
			cells[m][n+sidx].str=submission.charAt(sidx);
			cells[m][n+sidx].AMROW=1;
			if(sidx==0){
				cells[m][n+sidx].AMHEAD=1;
				cells[m][n+sidx].AMROWHEAD=1;
				cells[m][n+sidx].ROW_WORD=submission;
			}
		}
		else{
			if(submission.charAt(sidx)=="-"){cells[m+sidx][n].firstChild.src="images/dash.jpeg";}
			else{cells[m+sidx][n].firstChild.src="images/"+submission.charAt(sidx)+".jpeg";}
			cells[m+sidx][n].str=submission.charAt(sidx);
			cells[m+sidx][n].AMCOL=1;
			if(sidx==0){
				cells[m+sidx][n].AMHEAD=1;
				cells[m+sidx][n].AMCOLHEAD=1;
				cells[m+sidx][n].COL_WORD=submission;
			}
		}
	}
	add_to_used(keyval);
	
	stuck=0;
	really_stuck=0;
	while(get_words().length>0){
		//alert(stuck+","+really_stuck+","+submission+","+words);
		rand_idx=get_rand_idx();
		keyval=remove_word_by_index(rand_idx);
		submission=keyval.split(":",2)[0];
		rval=localize(submission,really_stuck);
		//alert(submission+" "+rval);
		
		if(rval==1){
			add_to_used(keyval);
			stuck=0;
			really_stuck=0;
		}
		else{
			add_to_words(keyval);
			stuck++;
		}
		if(stuck>get_words().length*4){
			if(allow_disconnected==0)break;
			really_stuck++;
			if(really_stuck>get_words().length*2)break;	
		}
	}
	//alert("used="+used.length+", unused="+words.length);
	//alert(get_used()+":"+get_words());
*/
///SAFARI-UPSIDE-DOWN VERSION
	while(1){
		offset--;
		m=Math.floor(Math.random()+Math.random()*offset);
		n=Math.floor(Math.random()+Math.random()*offset);
		if(m<0){advise1();return}
		if(n<0){advise1();return}
		
		rand_idx=get_rand_idx();
		keyval=remove_word_by_index(rand_idx);
		submission=keyval.split(":",2)[0];
		
		//alert(submission.length);
		
		if(submission.length<1){
			add_to_words(keyval);
			submission=null;
			continue;
		}
		if(start_with_row){
			if(n+submission.length>cells[0].length){
				add_to_words(keyval);
				submission=null;
				continue;
			}
		}
		if(!start_with_row){
			if(m+submission.length>rows.length){
				add_to_words(keyval);
				submission=null;
				continue;
			}
		}
		if(submission)break;
	}
	for(var sidx=0;sidx<submission.length;sidx++){
		if(start_with_row){
			if(submission.charAt(sidx)=="-"){cells[m][n+sidx].firstChild.src="images/dash.jpeg";}
			else{cells[m][n+sidx].firstChild.src="images/"+submission.charAt(sidx)+".jpeg";}
			
			//alert(submission.slice(sidx:sidx+1));
			
			cells[m][n+sidx].str=submission.charAt(sidx);
			cells[m][n+sidx].AMROW=1;
			if(sidx==0){
				cells[m][n+sidx].AMHEAD=1;
				cells[m][n+sidx].AMROWHEAD=1;
				cells[m][n+sidx].ROW_WORD=submission;
			}
		}
		else{
			if(submission.charAt(sidx)=="-"){cells[m+sidx][n].firstChild.src="images/dash.jpeg";}
			else{cells[m+sidx][n].firstChild.src="images/"+submission.charAt(sidx)+".jpeg";}
			cells[m+sidx][n].str=submission.charAt(sidx);
			cells[m+sidx][n].AMCOL=1;
			if(sidx==0){
				cells[m+sidx][n].AMHEAD=1;
				cells[m+sidx][n].AMCOLHEAD=1;
				cells[m+sidx][n].COL_WORD=submission;
			}
		}
	}
	add_to_used(keyval);
	
	stuck=0;
	really_stuck=0;
	while(get_words().length>0){
		//alert(stuck+","+really_stuck+","+submission+","+words);
		rand_idx=get_rand_idx();
		keyval=remove_word_by_index(rand_idx);
		submission=keyval.split(":",2)[0];
		rval=localize(submission,really_stuck);
		//alert(submission+" "+rval);
		
		if(rval==1){
			add_to_used(keyval);
			stuck=0;
			really_stuck=0;
		}
		else{
			add_to_words(keyval);
			stuck++;
		}
		if(stuck>get_words().length*4){
			if(allow_disconnected==0)break;
			really_stuck++;
			if(really_stuck>get_words().length*2)break;	
		}
	}
	//alert("used="+used.length+", unused="+words.length);
	//alert(get_used()+":"+get_words());



	//update success label for last generation:
	gbs.removeChild(success_label);
	success_label=document.createTextNode(update_success_string());
	gbs.appendChild(success_label);
	//cells.style.cursor = "default";
}

function localize(submission,really_stuck){
	//next: localize remaining...
	var hs=0;
	var m_hs=0;
	var n_hs=0;
	var rc_hs="row";
	var ok=0;
	var score;
	var dummy;
	//rows
	//alert(submission+": "+submission.length);
	for(var midx=0;midx<rows.length;midx++){
		for(var nidx=0;nidx<cells[0].length-submission.length;nidx++){
			//m,n candidate row head
			ok=1;
			score=0;
			
			if(nidx+submission.length>cells[0].length){ok=0;continue;}
			for(var sidx=0;sidx<submission.length;sidx++){
				if(cells[midx][nidx+sidx].str=="blank")dummy=99;
				else{
					if(cells[midx][nidx+sidx].str==submission.charAt(sidx))score=score+1;
					else ok=0;
				}
			}
			//print midx,nidx,ok,score
			if(ok==1 && score<submission.length){
				if(really_stuck>0){score++;}
				if(score>hs){
					if(check4conflict(submission,"row",midx,nidx)){
						hs=score;m_hs=midx;n_hs=nidx;rc_hs="row";
					}
				}
			}	
		}
	}
	//cols
	for(var midx=0;midx<rows.length-submission.length;midx++){
		if(midx+submission.length>rows.length)continue;
		for(var nidx=0;nidx<NCOL;nidx++){
			ok=1
			score=0
			for(var sidx=0;sidx<submission.length;sidx++){
				if(cells[midx+sidx][nidx].str=="blank")dummy=99;
				else{
					if(cells[midx+sidx][nidx].str==submission.charAt(sidx))score=score+1;
					else ok=0;
				}
			}
			//print midx,nidx,ok,score
			if(ok==1 && score<submission.length){
				if(really_stuck>0){score++;}
				if(score>hs){
					if(check4conflict(submission,"col",midx,nidx)){
						hs=score;m_hs=midx;n_hs=nidx;rc_hs="col";
					}
				}
			}	
		}
	}
	
	if(hs>0){
		//alert(rc_hs+" r="+m_hs+" c="+n_hs+", submission="+submission+" ok="+ok+" score="+score);
		for(var sidx=0;sidx<submission.length;sidx++){
			if(rc_hs=="row"){
				if(submission.charAt(sidx)=="-"){cells[m_hs][n_hs+sidx].firstChild.src="images/dash.jpeg";}
				else{cells[m_hs][n_hs+sidx].firstChild.src="images/"+submission.charAt(sidx)+".jpeg";}
				cells[m_hs][n_hs+sidx].str=submission.charAt(sidx);
				cells[m_hs][n_hs+sidx].AMROW=1;
				if(sidx==0){
					cells[m_hs][n_hs+sidx].AMHEAD=1;
					cells[m_hs][n_hs+sidx].AMROWHEAD=1;
					cells[m_hs][n_hs+sidx].ROW_WORD=submission;
					//alert("row "+m_hs+","+n_hs+" "+submission+" "+score);
				}
			}
			else{
				if(submission.charAt(sidx)=="-"){cells[m_hs+sidx][n_hs].firstChild.src="images/dash.jpeg";}
				else{cells[m_hs+sidx][n_hs].firstChild.src="images/"+submission.charAt(sidx)+".jpeg";}
				cells[m_hs+sidx][n_hs].str=submission.charAt(sidx);
				cells[m_hs+sidx][n_hs].AMCOL=1;
				if(sidx==0){
					cells[m_hs+sidx][n_hs].AMHEAD=1;
					cells[m_hs+sidx][n_hs].AMCOLHEAD=1;
					cells[m_hs+sidx][n_hs].COL_WORD=submission;
					//alert("col "+m_hs+","+n_hs+" "+submission+" "+score);
				}
			}
			//if(rc_hs=="row")board.set_row_head(m_hs,n_hs,len(submission));
			//else:board.set_col_head(m_hs,n_hs,len(submission));
		}
		return(1);
	}
	//if(really_stuck>0){
	//}
	return(submission);
}	
function check4conflict(submission,rcval,m,n){
	ok=1
	if(rcval=="row"){
		//check rows above and below;
		//above
		if(m>0){
			for(nidx=n;nidx<n+submission.length;nidx++){
				if(cells[m-1][nidx].str=="blank")dummy=99;
				else{
					if(cells[m][nidx].str==submission.charAt(nidx-n))dummy=99;
					else ok=0;
				}
			}
		}
		//below
		if(m<rows.length-1){
			for(nidx=n;nidx<n+submission.length;nidx++){
				if(cells[m+1][nidx].str=="blank")dummy=99;
				else{
					if(cells[m][nidx].str==submission.charAt(nidx-n))dummy=99;
					else ok=0;
				}
			}
		}
		//check row endpoints
		if(n>0){
			if(cells[m][n-1].str=="blank")dummy=99;
			else ok=0;
		}
		if(n+submission.length<cells[0].length){
			if(cells[m][n+submission.length].str=="blank")dummy=99;
			else ok=0;
		}
	}

	else if(rcval=="col"){
		//check cols left and right;
		//left	//left,up,down failed!
		if(n>0){
			for(midx=m;midx<m+submission.length;midx++){
				if(cells[midx][n-1].str=="blank")dummy=99;
				else{
					if(cells[midx][n].str==submission.charAt(midx-m))dummy=99;
					else ok=0;
				}
			}
		}
		//right
		if(n<cells[0].length-1){
			for(midx=m;midx<m+submission.length;midx++){
				if(cells[midx][n+1].str=="blank")dummy=99;
				else{
					if(cells[midx][n].str==submission.charAt(midx-m))dummy=99;
					else ok=0;
				}
			}
		}	
		//check col endpoints
		if(m>0){
			if(cells[m-1][n].str=="blank")dummy=99;
			else ok=0;
		}
		if(m+submission.length<rows.length){
			if(cells[m+submission.length][n].str=="blank")dummy=99;
			else ok=0;
		}
	}
	return(ok);
}
function clear_out_hints(){
	while(down_list.length>0){down_list.shift();}
	while(across_list.length>0){across_list.shift();}
	try{HintDiv.removeChild(HintTableDiv);}
	catch(ex){dummy=99;}
	delete(HintTableDiv);
}
function generate_puzzle(){
	
	down_counter=1;
	across_counter=1;
	clear_out_hints();
	
	for(var midx=0;midx<rows.length;midx++){
		for(var nidx=0;nidx<cells[0].length;nidx++){
			
			if(cells[midx][nidx].AMHEAD==1){
				
				if((cells[midx][nidx].AMROWHEAD==1) && (cells[midx][nidx].AMCOLHEAD==1)){//corner_head
					if(across_counter>=down_counter){
						down_counter=across_counter;
						pcells[midx][nidx].firstChild.src="images/"+parseInt(across_counter)+".jpeg";
						across_list.push(parseInt(across_counter)+". "+get_hint_by_key(cells[midx][nidx].ROW_WORD));
						down_list.push(parseInt(down_counter)+". "+get_hint_by_key(cells[midx][nidx].COL_WORD));
						across_counter++;
						down_counter++
						//alert("section 1:\n"+across_list+"\n"+down_list);
					}
					else{//corner_head
						across_counter=down_counter;
						pcells[midx][nidx].firstChild.src="images/"+parseInt(down_counter)+".jpeg";
						across_list.push(parseInt(across_counter)+". "+get_hint_by_key(cells[midx][nidx].ROW_WORD));
						down_list.push(parseInt(down_counter)+". "+get_hint_by_key(cells[midx][nidx].COL_WORD));
						down_counter++;
						across_counter++;
						//alert("section 2:\n"+across_list+"\n"+down_list);
					}
				}
				else{
					if(cells[midx][nidx].AMROWHEAD){//just_row_head
						pcells[midx][nidx].firstChild.src="images/"+parseInt(across_counter)+".jpeg";
						across_list.push(parseInt(across_counter)+". "+get_hint_by_key(cells[midx][nidx].ROW_WORD));
						across_counter++;
						//alert("section 3:\n"+across_list+"\n"+down_list);
					}
					else{//just_col_head
						pcells[midx][nidx].firstChild.src="images/"+parseInt(down_counter)+".jpeg";
						down_list.push(parseInt(down_counter)+". "+get_hint_by_key(cells[midx][nidx].COL_WORD));
						down_counter++;
						//alert("section 4:\n"+across_list+"\n"+down_list);
					}
				}
			}
			else{//AMHEAD==0
				if((cells[midx][nidx].AMROW==1) || (cells[midx][nidx].AMCOL)){
					pcells[midx][nidx].firstChild.src="images/white.jpeg";
				}
			}
		}
	}

//alert(across_list.length+","+down_list.length);
//alert(across_list);
//alert(down_list);
}

function setup_hints_table(){
	
	HintDiv=document.createElement("div");
	HintTitleTable=document.createElement("table");
	HintTitleTable.style.backgroundColor="AAAAAA";
	//HintTitleTable.align="center";
	HintTitleTable.style.fontSize="12px";
	
	TitleRow=HintTitleTable.insertRow(-1);
	
	accross_title_cell=TitleRow.insertCell(0);
	accross_title_cell.bgColor="AAAAAA";
	accross_title_cell.style.color="000000";
	//accross_title_cell.style.fontWeight="bold";
	accross_title_cell.style.width="200"; 
	accross_title_cell.align="center";
	
	accross_title_cell.appendChild(document.createTextNode("Across"));
	down_title_cell=TitleRow.insertCell(1);
	down_title_cell.bgColor="AAAAAA";
	down_title_cell.style.color="000000";
	//down_title_cell.style.fontWeight="bold";
	down_title_cell.style.width="200"; 
	down_title_cell.align="center";
	down_title_cell.appendChild(document.createTextNode("Down"));

	HintDiv.appendChild(HintTitleTable);
	HintDiv.style.position="absolute";
	HintDiv.style.top=TOP+30;

	var winwidth = window.document.width || window.document.body.clientWidth;
	HintDiv.style.left=(winwidth-400)/2.;

	return(HintDiv);
}
function generate_hints(){
	try{HintDiv.removeChild(HintTableDiv);}
	catch(ex){dummy=99;}
	//catch(ex){alert(ex);}
	HintTableDiv=null;
	
	HintTableDiv=document.createElement("div");
	HintTable=document.createElement("table");
	HintTable.style.backgroundColor="FFFFFF";
	//HintTable.align="center";
	
	ContentRow=HintTable.insertRow(-1);
	
	AcrossCell=ContentRow.insertCell(0);
	AcrossCell.align="left";
	AcrossCell.style.width="200";
	AcrossTable=document.createElement("table");
	AcrossCell.appendChild(AcrossTable);
	
	DownCell=ContentRow.insertCell(1);
	DownCell.align="left";
	DownCell.style.width="200";
	DownTable=document.createElement("table");
	DownCell.appendChild(DownTable);

	for(idx=0;idx<across_list.length;idx++){
		val=document.createTextNode(across_list[idx]+"\n");
		dummyRow=AcrossTable.insertRow(-1);
		dummyCell=dummyRow.insertCell(0);
		dummyCell.appendChild(val);
	}
	
	for(idx=0;idx<down_list.length;idx++){
		val=document.createTextNode(down_list[idx]+"\n");
		dummyRow=DownTable.insertRow(-1);
		dummyCell=dummyRow.insertCell(0);
		dummyCell.appendChild(val);
	}
	
	HintTableDiv.appendChild(HintTable);
	HintDiv.appendChild(HintTableDiv);
}