var unique_count=0;var chess_set_img;var b_chess_set_img_loaded=0;var img_load_started=0;var processing_diagrams=0;var stored_fens=new Array();var stored_div_names=new Array();var diag_styles=0;function get_time(){var tt=new Date();return tt.getTime();}function unique_id(){unique_count++;return '_'+unique_count+'_'+(10000+Math.round(90000*Math.random()));}function process_chess_diagram(){if(!b_chess_set_img_loaded&&(get_time()-img_load_started)<6000&&chess_set_img&&!chess_set_img.complete){setTimeout('process_chess_diagram()',300);return;}if(stored_fens.length==0){processing_diagrams=0;return;}var fen=stored_fens.shift();var div_name=stored_div_names.shift();display_chess_diagram(fen,div_name,25);setTimeout('process_chess_diagram()',100);}function insert_chess_diagram(fen){var d=document;fen=fen.substring(0,100);if(!chess_set_img){chess_set_img=new Image();chess_set_img.src='/img/gkchd.gif';chess_set_img.style.position='absolute';chess_set_img.style.padding='0px';chess_set_img.style.margin='0px';chess_set_img.style.border='0px';chess_set_img.onload=chess_set_img_loaded;img_load_started=get_time();}if(!diag_styles){diag_styles=1;d.writeln('<style>.vlbls td { height: 25px; color: #888899; font-size: 10px; text-align: center; padding: 0px 2px 0px 1px; }</style>');d.writeln('<style>.hlbls td { width: 25px;  color: #888899; font-size: 10px; text-align: center; padding: 1px 0px 1px 0px; }</style>');}var div_name='fen'+unique_id();d.writeln('<div style="padding: 8px; width: 216px; height: 216px;"><table border=0 cellspacing=0 cellpadding=0><tr valign=top><td><div id="vl-'+div_name+'" class="vlbls"></div></td><td><div style="width: 200px; height: 200px; border: 1px solid #000;"><div style="text-align: center;" id="'+div_name+'"><br><br><br><br>Loading...</div></div></td></tr><tr><td></td><td><div id="hl-'+div_name+'" class="hlbls"></div></td></tr></table></div>');stored_fens.push(fen);stored_div_names.push(div_name);if(!processing_diagrams){processing_diagrams++;setTimeout('process_chess_diagram()',100);}}function chess_set_img_loaded(){b_chess_set_img_loaded=1;}function display_chess_diagram(fen,div_name,board_cell_size){var b_flip=0;var cur_pos=0;var x=0;var y=7;var char_chess='kqrnbpKQRNBP';var char_digit='12345678';var game=new Array();var repeat=0;if(!board_cell_size)board_cell_size=25;fen=fen.substring(0,100);while(cur_pos<fen.length){var cc=fen.charAt(cur_pos);if(cc=='/'){while(x<8){game[x+8*y]='--';x++;}x=0;y--;if(y<0)break;}else
if(char_digit.indexOf(cc)>=0){repeat=parseInt(cc);while(repeat>0){game[x+8*y]='--';x++;repeat--;}}else{var pos=char_chess.indexOf(cc);if(pos<0)break;var pc=pos>=6?'w':'b';pc+=cc.toLowerCase();game[x+8*y]=pc;x++;}cur_pos++;}while(cur_pos<fen.length){var c=fen.charAt(cur_pos);if(c!=' '&&c!='\t'){b_flip=c=='w'?1:0;break;}cur_pos++;}var from_x=-1;var from_y=-1;var to_x=-1;var to_y=-1;var extra_params=fen.indexOf('|||',cur_pos);if(extra_params>=0){extra_params+=3;var lastmove=fen.indexOf('last=',extra_params);if(lastmove>=0){lastmove+=5;from_x=chess_from_pos_x(fen.charAt(lastmove));from_y=chess_from_pos_y(fen.charAt(lastmove+1));to_x=chess_from_pos_x(fen.charAt(lastmove+2));to_y=chess_from_pos_y(fen.charAt(lastmove+3));}var param_flip=fen.indexOf('flip=',extra_params);if(param_flip>=0){b_flip=fen.charAt(param_flip+5)=='1'?1:0;}}var board=gk_get_el(div_name);board.innerHTML='';board.style.width=8*board_cell_size+'px';board.style.height=8*board_cell_size+'px';board.style.position='relative';board.style.padding='0px';var board_parent=board.parentNode;board_parent.removeChild(board);if(!chess_set_img){chess_set_img=new Image();chess_set_img.src='/img/gkchd.gif';chess_set_img.style.padding='0px';chess_set_img.style.margin='0px';chess_set_img.style.border='0px';chess_set_img.style.position='absolute';}for(x=0;x<8;x++){for(y=0;y<8;y++){var pc=document.createElement('div');pc.style.position='absolute';pc.style.width=board_cell_size+'px';pc.style.height=board_cell_size+'px';pc.style.overflow='hidden';pc.style.padding='0px';pc.style.margin='0px';pc.style.border='0px';pc.style.left=(b_flip?7-x:x)*board_cell_size+'px';pc.style.top=(b_flip?y:7-y)*board_cell_size+'px';var ofs_x=0;var ofs_y=0;var pp_g=game[x+8*y];if(!pp_g)pp_g='  ';var pp=pp_g.charAt(1);if(pp=='k')ofs_y=board_cell_size;else if(pp=='q')ofs_y=2*board_cell_size;else if(pp=='r')ofs_y=3*board_cell_size;else if(pp=='n')ofs_y=4*board_cell_size;else if(pp=='b')ofs_y=5*board_cell_size;else if(pp=='p')ofs_y=6*board_cell_size;if((x+y)&1)ofs_x+=2*board_cell_size;if(pp_g.charAt(0)=='b')ofs_x+=board_cell_size;if((x==from_x&&y==from_y)||(x==to_x&&y==to_y)){ofs_x+=1;ofs_y+=1;pc.style.border='1px solid #2222ff';pc.style.width=(board_cell_size-2)+'px';pc.style.height=(board_cell_size-2)+'px';}var tile=chess_set_img.cloneNode(false);tile.style.left=-1*ofs_x+'px';tile.style.top=-1*ofs_y+'px';pc.appendChild(tile);board.appendChild(pc);}}board_parent.appendChild(board);var vlabels=gk_get_el('vl-'+div_name);if(vlabels){if(b_flip){vlabels.innerHTML='<table cellspacing=0 cellpadding=0 border=0><tr><td width=13>1</td></tr><tr><td>2</td></tr><tr><td>3</td></tr><tr><td>4</td></tr><tr><td>5</td></tr><tr><td>6</td></tr><tr><td>7</td></tr><tr><td>8</td></tr></table>';}else{vlabels.innerHTML='<table cellspacing=0 cellpadding=0 border=0><tr><td width=13>8</td></tr><tr><td>7</td></tr><tr><td>6</td></tr><tr><td>5</td></tr><tr><td>4</td></tr><tr><td>3</td></tr><tr><td>2</td></tr><tr><td>1</td></tr></table>';}}var hlabels=gk_get_el('hl-'+div_name);if(hlabels){if(b_flip){hlabels.innerHTML='<table cellspacing=0 cellpadding=0 border=0><tr height=13><td>h</td><td>g</td><td>f</td><td>e</td><td>d</td><td>c</td><td>b</td><td>a</td></tr></table>';}else{hlabels.innerHTML='<table cellspacing=0 cellpadding=0 border=0><tr height=13><td>a</td><td>b</td><td>c</td><td>d</td><td>e</td><td>f</td><td>g</td><td>h</td></tr></table>';}}}function chess_from_pos_x(x){return x.charCodeAt(0)-97;}function chess_from_pos_y(y){return y.charCodeAt(0)-49;}function generate_chess_diagram(div_name,image_url){if((typeof div_name)=='undefined')div_name='fen'+unique_id();if(!chess_set_img){chess_set_img=new Image();chess_set_img.src=image_url?image_url:'/img/gkchd.gif';chess_set_img.style.position='absolute';chess_set_img.style.padding='0px';chess_set_img.style.margin='0px';chess_set_img.style.border='0px';chess_set_img.onload=chess_set_img_loaded;img_load_started=get_time();}return '<div style="padding: 8px 8px 0px 0px; width: 218px; height: 218px;"><table border=0 cellspacing=0 cellpadding=0><tr valign=top><td><div id="vl-'+div_name+'" class="chess-diag-vl">&nbsp;</div></td><td><div style="width: 200px; height: 200px; border: 1px solid #000;"><div style="text-align: center;" id="'+div_name+'"><br><br><br><br>Loading...</div></div></td></tr><tr><td></td><td><div id="hl-'+div_name+'" class="chess-diag-hl"></div></td></tr></table></div>';}