var glb_forsythe_str, glb_caption_str, glb_title_str; var glb_start_indexes, glb_num_displays; var glb_num_games; var glb_shade; var glb_game = 0, glb_index = 0; // Function to map light and dark squares. function Square_is_Light_or_Dark() { var row, col; var square; glb_shade = new Array(); square = 0; for (row = 0; row < 8; row++) { for (col = 0; col < 8; col++, square++) { if ((row + col) % 2 != 0) glb_shade[square] = "d.gif"; else glb_shade[square] = "l.gif"; } } } // Function to convert Forsythe_Notation to a 64-square board array. function Display_Diagram(Forsythe_Notation, Caption, Title) { var row, col; var num; var square; var index; var num_of_empty_squares; var length_of_Forsythe_Notation; var current_char = ""; var icon = ""; var piece; piece = new Array(); square = 0; length_of_Forsythe_Notation = Forsythe_Notation.length; for (index = 0; index < length_of_Forsythe_Notation; index++) { current_char = Forsythe_Notation.charAt(index); if (current_char == "/") { continue; } if (current_char == "p") { piece[square] = "bp"; square++; continue; } if (current_char == "P") { piece[square] = "wp"; square++; continue; } if (current_char == "n") { piece[square] = "bn"; square++; continue; } if (current_char == "N") { piece[square] = "wn"; square++; continue; } if (current_char == "b") { piece[square] = "bb"; square++; continue; } if (current_char == "B") { piece[square] = "wb"; square++; continue; } if (current_char == "r") { piece[square] = "br"; square++; continue; } if (current_char == "R") { piece[square] = "wr"; square++; continue; } if (current_char == "k") { piece[square] = "bk"; square++; continue; } if (current_char == "K") { piece[square] = "wk"; square++; continue; } if (current_char == "q") { piece[square] = "bq"; square++; continue; } if (current_char == "Q") { piece[square] = "wq"; square++; continue; } num_of_empty_squares = parseInt(current_char); for (num = 0; num < num_of_empty_squares; num++) { piece[square] = "s"; square++; } } // //Create Diagram Display HTML // parent.frames[1].document.open(); parent.frames[1].document.write("
"); parent.frames[1].document.write("" + Title + "
"); parent.frames[1].document.write(""); square = 0; for (row = 0; row < 8; row++) { for (col = 0; col < 8; col++) { icon = "img src=\"../chessboard/" + piece[square] + glb_shade[square] + "\" height=33 width=33"; parent.frames[1].document.write("<" + icon + ">"); square++; } parent.frames[1].document.write("
"); } parent.frames[1].document.write(""); if(glb_game > 0) { parent.frames[1].document.write("
"); if(glb_index == 0) { parent.frames[1].document.write(""); parent.frames[1].document.write(" "); } else { parent.frames[1].document.write(""); if(glb_index < glb_num_displays[glb_game]-1) parent.frames[1].document.write(" "); } parent.frames[1].document.write("
"); } parent.frames[1].document.write("
"); parent.frames[1].document.write(Caption); parent.frames[1].document.write(""); parent.frames[1].document.close(); } // Display the specified board position function Display_Position(game, index, hint) { glb_game = game; glb_index = index; if(hint || index != 0) Display_Diagram(glb_forsythe_str[glb_start_indexes[game] + index], glb_caption_str[glb_start_indexes[game] + index], glb_title_str[glb_start_indexes[game] + index]); else Display_Diagram(glb_forsythe_str[glb_start_indexes[game] + index], "", glb_title_str[glb_start_indexes[game] + index]); }