// JavaScript Document
var counter = 1;

function pokus()
{
alert('Hlavu vzhůru, bude hůř!');
}




function spocitat() {
    try {
      var a = document.getElementById('rozmer_a').value;    
      var c = document.getElementById('rozmer_c').value;
      var ks = document.getElementById('pocet').value;
      var cena = document.getElementById('cena');
      var tlouska = document.getElementById('tlouska').value;
      var tabulka;
      var tabulka_20;
      var tabulka_08;
        //cenová tabulka
 
      tabulka_20 = {13:{50:462, 60:501, 70:540, 80:579, 90:617, 100:656, 110:695, 120:734, 130:773, 140:812, 150:851, 160:890, 170:929, 180:968, 190:1006, 200:1045, 210:1084, 220:1123, 230:1162, 240:1201, 250:1240, 260:1279, 270:1318, 280:1356, 290:1395, 300:1434, 310:1473, 320:1512, 330:1551},
                    14:{50:473, 60:514, 70:555, 80:595, 90:636, 100:676, 110:717, 120:758, 130:798, 140:839, 150:879, 160:920, 170:961, 180:1001, 190:1042, 200:1082, 210:1123, 220:1164, 230:1204, 240:1245, 250:1286, 260:1326, 270:1367, 280:1407, 290:1448, 300:1489, 310:1529, 320:1570, 330:1610},
                    15:{50:485, 60:527, 70:569, 80:612, 90:654, 100:696, 110:739, 120:781, 130:823, 140:866, 150:908, 160:950, 170:993, 180:1035, 190:1077, 200:1120, 210:1162, 220:1204, 230:1247, 240:1289, 250:1331, 260:1374, 270:1416, 280:1458, 290:1501, 300:1543, 310:1585, 320:1628, 330:1670},
                    16:{50:496, 60:540, 70:584, 80:628, 90:672, 100:716, 110:761, 120:805, 130:849, 140:893, 150:937, 160:981, 170:1025, 180:1069, 190:1113, 200:1157, 210:1201, 220:1245, 230:1289, 240:1333, 250:1377, 260:1421, 270:1465, 280:1509, 290:1553, 300:1597, 310:1641, 320:1685, 330:1729},
                    17:{50:508, 60:554, 70:599, 80:645, 90:691, 100:737, 110:782, 120:828, 130:874, 140:920, 150:965, 160:1011, 170:1057, 180:1103, 190:1148, 200:1194, 210:1240, 220:1286, 230:1331, 240:1377, 250:1423, 260:1469, 270:1514, 280:1560, 290:1606, 300:1652, 310:1697, 320:1743, 330:1789},
                    18:{50:519, 60:567, 70:614, 80:662, 90:709, 100:757, 110:804, 120:852, 130:899, 140:946, 150:994, 160:1041, 170:1089, 180:1136, 190:1184, 200:1231, 210:1279, 220:1326, 230:1374, 240:1421, 250:1469, 260:1516, 270:1563, 280:1611, 290:1658, 300:1706, 310:1753, 320:1801, 330:1848},
                    19:{50:531, 60:580, 70:629, 80:678, 90:727, 100:777, 110:826, 120:875, 130:924, 140:973, 150:1023, 160:1072, 170:1121, 180:1170, 190:1219, 200:1268, 210:1318, 220:1367, 230:1416, 240:1465, 250:1514, 260:1563, 270:1613, 280:1662, 290:1711, 300:1760, 310:1809, 320:1859, 330:1908},
                    20:{50:542, 60:593, 70:644, 80:695, 90:746, 100:797, 110:848, 120:898, 130:949, 140:1000, 150:1051, 160:1102, 170:1153, 180:1204, 190:1255, 200:1306, 210:1356, 220:1407, 230:1458, 240:1509, 250:1560, 260:1611, 270:1662, 280:1713, 290:1764, 300:1814, 310:1865, 320:1916, 330:1967},
                    21:{50:554, 60:606, 70:659, 80:712, 90:764, 100:817, 110:869, 120:922, 130:975, 140:1027, 150:1080, 160:1132, 170:1185, 180:1238, 190:1290, 200:1343, 210:1395, 220:1448, 230:1501, 240:1553, 250:1606, 260:1658, 270:1711, 280:1764, 290:1816, 300:1869, 310:1921, 320:1974, 330:2027},
                    22:{50:565, 60:619, 70:674, 80:728, 90:782, 100:837, 110:891, 120:945, 130:1000, 140:1054, 150:1108, 160:1163, 170:1217, 180:1271, 190:1326, 200:1380, 210:1434, 220:1489, 230:1543, 240:1597, 250:1652, 260:1706, 270:1760, 280:1814, 290:1869, 300:1923, 310:1977, 320:2032, 330:2086},
                    23:{50:577, 60:633, 70:689, 80:745, 90:801, 100:857, 110:913, 120:969, 130:1025, 140:1081, 150:1137, 160:1193, 170:1249, 180:1305, 190:1361, 200:1417, 210:1473, 220:1529, 230:1585, 240:1641, 250:1697, 260:1753, 270:1809, 280:1865, 290:1921, 300:1977, 310:2033, 320:2090, 330:2146},
                    24:{50:588, 60:646, 70:704, 80:761, 90:819, 100:877, 110:935, 120:992, 130:1050, 140:1108, 150:1166, 160:1223, 170:1281, 180:1339, 190:1397, 200:1454, 210:1512, 220:1570, 230:1628, 240:1685, 250:1743, 260:1801, 270:1859, 280:1916, 290:1974, 300:2032, 310:2090, 320:2147, 330:2205},
                    25:{50:600, 60:659, 70:719, 80:778, 90:837, 100:897, 110:956, 120:1016, 130:1075, 140:1135, 150:1194, 160:1254, 170:1313, 180:1373, 190:1432, 200:1491, 210:1551, 220:1610, 230:1670, 240:1729, 250:1789, 260:1848, 270:1908, 280:1967, 290:2027, 300:2086, 310:2146, 320:2205, 330:2264},
                    26:{50:611, 60:672, 70:733, 80:795, 90:856, 100:917, 110:978, 120:1039, 130:1100, 140:1162, 150:1223, 160:1284, 170:1345, 180:1406, 190:1468, 200:1529, 210:1590, 220:1651, 230:1712, 240:1773, 250:1835, 260:1896, 270:1957, 280:2018, 290:2079, 300:2140, 310:2202, 320:2263, 330:2324},
                    27:{50:623, 60:685, 70:748, 80:811, 90:874, 100:937, 110:1000, 120:1063, 130:1126, 140:1189, 150:1251, 160:1314, 170:1377, 180:1440, 190:1503, 200:1566, 210:1629, 220:1692, 230:1755, 240:1817, 250:1880, 260:1943, 270:2006, 280:2069, 290:2132, 300:2195, 310:2258, 320:2320, 330:2383},
                    28:{50:634, 60:699, 70:763, 80:828, 90:892, 100:957, 110:1022, 120:1086, 130:1151, 140:1215, 150:1280, 160:1345, 170:1409, 180:1474, 190:1538, 200:1603, 210:1668, 220:1732, 230:1797, 240:1861, 250:1926, 260:1991, 270:2055, 280:2120, 290:2184, 300:2249, 310:2314, 320:2378, 330:2443},
                    29:{50:646, 60:712, 70:778, 80:844, 90:911, 100:977, 110:1043, 120:1110, 130:1176, 140:1242, 150:1309, 160:1375, 170:1441, 180:1508, 190:1574, 200:1640, 210:1707, 220:1773, 230:1839, 240:1905, 250:1972, 260:2038, 270:2104, 280:2171, 290:2237, 300:2303, 310:2370, 320:2436, 330:2502},
                    30:{50:657, 60:725, 70:793, 80:861, 90:929, 100:997, 110:1065, 120:1133, 130:1201, 140:1269, 150:1337, 160:1405, 170:1473, 180:1541, 190:1609, 200:1677, 210:1745, 220:1813, 230:1881, 240:1950, 250:2018, 260:2086, 270:2154, 280:2222, 290:2290, 300:2358, 310:2426, 320:2494, 330:2562},
                    31:{50:669, 60:738, 70:808, 80:878, 90:947, 100:1017, 110:1087, 120:1157, 130:1226, 140:1296, 150:1366, 160:1436, 170:1505, 180:1575, 190:1645, 200:1715, 210:1784, 220:1854, 230:1924, 240:1994, 250:2063, 260:2133, 270:2203, 280:2273, 290:2342, 300:2412, 310:2482, 320:2551, 330:2621},
                    32:{50:680, 60:751, 70:823, 80:894, 90:966, 100:1037, 110:1109, 120:1180, 130:1252, 140:1323, 150:1395, 160:1466, 170:1537, 180:1609, 190:1680, 200:1752, 210:1823, 220:1895, 230:1966, 240:2038, 250:2109, 260:2180, 270:2252, 280:2323, 290:2395, 300:2466, 310:2538, 320:2609, 330:2681}}; 

      tabulka_15 = { 13:{50:391, 60:420, 70:448, 80:476, 90:505, 100:533, 110:562, 120:590, 130:618, 140:647,  150:675,  160:704,  170:732,  180:760,  190:789,  200:817,  210:845,  220:874,  230:902,  240:931,  250:959,  260:987,  270:1016, 280:1044, 290:1072, 300:1101, 310:1129, 320:1158, 330:1186},
                  14:{50:400, 60:429, 70:459, 80:489, 90:518, 100:548, 110:578, 120:607, 130:637, 140:666,  150:696,  160:726,  170:755,  180:785,  190:815,  200:844,  210:874,  220:903,  230:933,  240:963,  250:992,  260:1022, 270:1052, 280:1081, 290:1111, 300:1140, 310:1170, 320:1200, 330:1229},
                  15:{50:408, 60:439, 70:470, 80:501, 90:532, 100:563, 110:593, 120:624, 130:655, 140:686,  150:717,  160:748,  170:779,  180:810,  190:840,  200:871,  210:902,  220:933,  230:964,  240:995,  250:1026, 260:1057, 270:1087, 280:1118, 290:1149, 300:1180, 310:1211, 320:1242, 330:1273},
                  16:{50:416, 60:449, 70:481, 80:513, 90:545, 100:577, 110:609, 120:641, 130:674, 140:706,  150:738,  160:770,  170:802,  180:834,  190:866,  200:898,  210:931,  220:963,  230:995,  240:1027, 250:1059, 260:1091, 270:1123, 280:1155, 290:1188, 300:1220, 310:1252, 320:1284, 330:1316},
                  17:{50:425, 60:458, 70:492, 80:525, 90:558, 100:592, 110:625, 120:659, 130:692, 140:725,  150:759,  160:792,  170:825,  180:859,  190:892,  200:926,  210:959,  220:992,  230:1026, 240:1059, 250:1092, 260:1126, 270:1159, 280:1193, 290:1226, 300:1259, 310:1293, 320:1326, 330:1359},
                  18:{50:433, 60:468, 70:502, 80:537, 90:572, 100:606, 110:641, 120:676, 130:710, 140:745,  150:780,  160:814,  170:849,  180:883,  190:918,  200:953,  210:987,  220:1022, 230:1057, 240:1091, 250:1126, 260:1160, 270:1195, 280:1230, 290:1264, 300:1299, 310:1334, 320:1368, 330:1403},
                  19:{50:442, 60:477, 70:513, 80:549, 90:585, 100:621, 110:657, 120:693, 130:729, 140:765,  150:800,  160:836,  170:872,  180:908,  190:944,  200:980,  210:1016, 220:1052, 230:1087, 240:1123, 250:1159, 260:1195, 270:1231, 280:1267, 290:1303, 300:1339, 310:1374, 320:1410, 330:1446},
                  20:{50:450, 60:487, 70:524, 80:561, 90:599, 100:636, 110:673, 120:710, 130:747, 140:784,  150:821,  160:858,  170:896,  180:933,  190:970,  200:1007, 210:1044, 220:1081, 230:1118, 240:1155, 250:1193, 260:1230, 270:1267, 280:1304, 290:1341, 300:1378, 310:1415, 320:1452, 330:1490},
                  21:{50:458, 60:497, 70:535, 80:574, 90:612, 100:650, 110:689, 120:727, 130:765, 140:804,  150:842,  160:881,  170:919,  180:957,  190:996,  200:1034, 210:1072, 220:1111, 230:1149, 240:1188, 250:1226, 260:1264, 270:1303, 280:1341, 290:1379, 300:1418, 310:1456, 320:1495, 330:1533},
                  22:{50:467, 60:506, 70:546, 80:586, 90:625, 100:665, 110:705, 120:744, 130:784, 140:823,  150:863,  160:903,  170:942,  180:982,  190:1022, 200:1061, 210:1101, 220:1140, 230:1180, 240:1220, 250:1259, 260:1299, 270:1339, 280:1378, 290:1418, 300:1457, 310:1497, 320:1537, 330:1576},
                  23:{50:475, 60:516, 70:557, 80:598, 90:639, 100:680, 110:720, 120:761, 130:802, 140:843,  150:884,  160:925,  170:966,  180:1007, 190:1047, 200:1088, 210:1129, 220:1170, 230:1211, 240:1252, 250:1293, 260:1334, 270:1374, 280:1415, 290:1456, 300:1497, 310:1538, 320:1579, 330:1620},
                  24:{50:483, 60:526, 70:568, 80:610, 90:652, 100:694, 110:736, 120:778, 130:821, 140:863,  150:905,  160:947,  170:989,  180:1031, 190:1073, 200:1115, 210:1158, 220:1200, 230:1242, 240:1284, 250:1326, 260:1368, 270:1410, 280:1452, 290:1495, 300:1537, 310:1579, 320:1621, 330:1663},
                  25:{50:492, 60:535, 70:579, 80:622, 90:665, 100:709, 110:752, 120:796, 130:839, 140:882,  150:926,  160:969,  170:1012, 180:1056, 190:1099, 200:1143, 210:1186, 220:1229, 230:1273, 240:1316, 250:1359, 260:1403, 270:1446, 280:1490, 290:1533, 300:1576, 310:1620, 320:1663, 330:1706},
                  26:{50:500, 60:545, 70:590, 80:634, 90:679, 100:723, 110:768, 120:813, 130:857, 140:902,  150:947,  160:991,  170:1036, 180:1080, 190:1125, 200:1170, 210:1214, 220:1259, 230:1304, 240:1348, 250:1393, 260:1437, 270:1482, 280:1527, 290:1571, 300:1616, 310:1661, 320:1705, 330:1750},
                  27:{50:509, 60:555, 70:600, 80:646, 90:692, 100:738, 110:784, 120:830, 130:876, 140:922,  150:967,  160:1013, 170:1059, 180:1105, 190:1151, 200:1197, 210:1243, 220:1289, 230:1334, 240:1380, 250:1426, 260:1472, 270:1518, 280:1564, 290:1610, 300:1656, 310:1701, 320:1747, 330:1793},
                  28:{50:517, 60:564, 70:611, 80:658, 90:706, 100:753, 110:800, 120:847, 130:894, 140:941,  150:988,  160:1035, 170:1083, 180:1130, 190:1177, 200:1224, 210:1271, 220:1318, 230:1365, 240:1412, 250:1460, 260:1507, 270:1554, 280:1601, 290:1648, 300:1695, 310:1742, 320:1789, 330:1837},
                  29:{50:525, 60:574, 70:622, 80:671, 90:719, 100:767, 110:816, 120:864, 130:912, 140:961,  150:1009, 160:1058, 170:1106, 180:1154, 190:1203, 200:1251, 210:1299, 220:1348, 230:1396, 240:1445, 250:1493, 260:1541, 270:1590, 280:1638, 290:1686, 300:1735, 310:1783, 320:1832, 330:1880},
                  30:{50:534, 60:583, 70:633, 80:683, 90:732, 100:782, 110:832, 120:881, 130:931, 140:980,  150:1030, 160:1080, 170:1129, 180:1179, 190:1229, 200:1278, 210:1328, 220:1377, 230:1427, 240:1477, 250:1526, 260:1576, 270:1626, 280:1675, 290:1725, 300:1774, 310:1824, 320:1874, 330:1923},
                  31:{50:542, 60:593, 70:644, 80:695, 90:746, 100:797, 110:847, 120:898, 130:949, 140:1000, 150:1051, 160:1102, 170:1153, 180:1204, 190:1254, 200:1305, 210:1356, 220:1407, 230:1458, 240:1509, 250:1560, 260:1611, 270:1661, 280:1712, 290:1763, 300:1814, 310:1865, 320:1916, 330:1967},
                  32:{50:551, 60:603, 70:655, 80:707, 90:759, 100:811, 110:863, 120:915, 130:968, 140:1020, 150:1072, 160:1124, 170:1176, 180:1228, 190:1280, 200:1332, 210:1385, 220:1437, 230:1489, 240:1541, 250:1593, 260:1645, 270:1697, 280:1749, 290:1802, 300:1854, 310:1906, 320:1958, 330:2010}
                  };

      tabulka_08 = {13:{50:339, 60:359, 70:380, 80:400, 90:421, 100:441, 110:462, 120:482, 130:502, 140:523, 150:543, 160:564, 170:584, 180:605, 190:625, 200:646, 210:666, 220:687, 230:707, 240:728, 250:748, 260:769, 270:789, 280:810, 290:830, 300:851, 310:871, 320:892, 330:912},
                    14:{50:345, 60:366, 70:387, 80:409, 90:430, 100:452, 110:473, 120:494, 130:516, 140:537, 150:559, 160:580, 170:601, 180:623, 190:644, 200:666, 210:687, 220:708, 230:730, 240:751, 250:773, 260:794, 270:815, 280:837, 290:858, 300:879, 310:901, 320:922, 330:944},
                    15:{50:351, 60:373, 70:395, 80:418, 90:440, 100:462, 110:484, 120:507, 130:529, 140:551, 150:574, 160:596, 170:618, 180:641, 190:663, 200:685, 210:707, 220:730, 230:752, 240:774, 250:797, 260:819, 270:841, 280:863, 290:886, 300:908, 310:930, 320:953, 330:975},
                    16:{50:357, 60:380, 70:403, 80:426, 90:449, 100:473, 110:496, 120:519, 130:542, 140:566, 150:589, 160:612, 170:635, 180:658, 190:682, 200:705, 210:728, 220:751, 230:774, 240:798, 250:821, 260:844, 270:867, 280:890, 290:914, 300:937, 310:960, 320:983, 330:1006},
                    17:{50:363, 60:387, 70:411, 80:435, 90:459, 100:483, 110:507, 120:531, 130:556, 140:580, 150:604, 160:628, 170:652, 180:676, 190:700, 200:724, 210:748, 220:773, 230:797, 240:821, 250:845, 260:869, 270:893, 280:917, 290:941, 300:965, 310:989, 320:1014, 330:1038},
                    18:{50:369, 60:394, 70:419, 80:444, 90:469, 100:494, 110:519, 120:544, 130:569, 140:594, 150:619, 160:644, 170:669, 180:694, 190:719, 200:744, 210:769, 220:794, 230:819, 240:844, 250:869, 260:894, 270:919, 280:944, 290:969, 300:994, 310:1019, 320:1044, 330:1069},
                    19:{50:375, 60:401, 70:427, 80:453, 90:478, 100:504, 110:530, 120:556, 130:582, 140:608, 150:634, 160:660, 170:686, 180:712, 190:738, 200:763, 210:789, 220:815, 230:841, 240:867, 250:893, 260:919, 270:945, 280:971, 290:997, 300:1023, 310:1048, 320:1074, 330:1100},
                    20:{50:381, 60:408, 70:435, 80:461, 90:488, 100:515, 110:542, 120:569, 130:595, 140:622, 150:649, 160:676, 170:703, 180:729, 190:756, 200:783, 210:810, 220:837, 230:863, 240:890, 250:917, 260:944, 270:971, 280:998, 290:1024, 300:1051, 310:1078, 320:1105, 330:1132},
                    21:{50:387, 60:415, 70:442, 80:470, 90:498, 100:526, 110:553, 120:581, 130:609, 140:636, 150:664, 160:692, 170:720, 180:747, 190:775, 200:803, 210:830, 220:858, 230:886, 240:914, 250:941, 260:969, 270:997, 280:1024, 290:1052, 300:1080, 310:1108, 320:1135, 330:1163},
                    22:{50:393, 60:422, 70:450, 80:479, 90:507, 100:536, 110:565, 120:593, 130:622, 140:651, 150:679, 160:708, 170:736, 180:765, 190:794, 200:822, 210:851, 220:879, 230:908, 240:937, 250:965, 260:994, 270:1023, 280:1051, 290:1080, 300:1108, 310:1137, 320:1166, 330:1194},
                    23:{50:399, 60:429, 70:458, 80:488, 90:517, 100:547, 110:576, 120:606, 130:635, 140:665, 150:694, 160:724, 170:753, 180:783, 190:812, 200:842, 210:871, 220:901, 230:930, 240:960, 250:989, 260:1019, 270:1048, 280:1078, 290:1108, 300:1137, 310:1167, 320:1196, 330:1226},
                    24:{50:405, 60:436, 70:466, 80:496, 90:527, 100:557, 110:588, 120:618, 130:648, 140:679, 150:709, 160:740, 170:770, 180:801, 190:831, 200:861, 210:892, 220:922, 230:953, 240:983, 250:1014, 260:1044, 270:1074, 280:1105, 290:1135, 300:1166, 310:1196, 320:1226, 330:1257},
                    25:{50:411, 60:442, 70:474, 80:505, 90:536, 100:568, 110:599, 120:630, 130:662, 140:693, 150:724, 160:756, 170:787, 180:818, 190:850, 200:881, 210:912, 220:944, 230:975, 240:1006, 250:1038, 260:1069, 270:1100, 280:1132, 290:1163, 300:1194, 310:1226, 320:1257, 330:1288},
                    26:{50:417, 60:449, 70:482, 80:514, 90:546, 100:578, 110:611, 120:643, 130:675, 140:707, 150:739, 160:772, 170:804, 180:836, 190:868, 200:901, 210:933, 220:965, 230:997, 240:1030, 250:1062, 260:1094, 270:1126, 280:1158, 290:1191, 300:1223, 310:1255, 320:1287, 330:1320},
                    27:{50:423, 60:456, 70:489, 80:523, 90:556, 100:589, 110:622, 120:655, 130:688, 140:721, 150:755, 160:788, 170:821, 180:854, 190:887, 200:920, 210:953, 220:986, 230:1020, 240:1053, 250:1086, 260:1119, 270:1152, 280:1185, 290:1218, 300:1252, 310:1285, 320:1318, 330:1351},
                    28:{50:429, 60:463, 70:497, 80:531, 90:565, 100:599, 110:633, 120:668, 130:702, 140:736, 150:770, 160:804, 170:838, 180:872, 190:906, 200:940, 210:974, 220:1008, 230:1042, 240:1076, 250:1110, 260:1144, 270:1178, 280:1212, 290:1246, 300:1280, 310:1314, 320:1348, 330:1382},
                    29:{50:435, 60:470, 70:505, 80:540, 90:575, 100:610, 110:645, 120:680, 130:715, 140:750, 150:785, 160:820, 170:855, 180:889, 190:924, 200:959, 210:994, 220:1029, 230:1064, 240:1099, 250:1134, 260:1169, 270:1204, 280:1239, 290:1274, 300:1309, 310:1344, 320:1379, 330:1414},
                    30:{50:441, 60:477, 70:513, 80:549, 90:585, 100:621, 110:656, 120:692, 130:728, 140:764, 150:800, 160:836, 170:871, 180:907, 190:943, 200:979, 210:1015, 220:1051, 230:1086, 240:1122, 250:1158, 260:1194, 270:1230, 280:1266, 290:1302, 300:1337, 310:1373, 320:1409, 330:1445},
                    31:{50:447, 60:484, 70:521, 80:558, 90:594, 100:631, 110:668, 120:705, 130:741, 140:778, 150:815, 160:852, 170:888, 180:925, 190:962, 200:999, 210:1035, 220:1072, 230:1109, 240:1146, 250:1182, 260:1219, 270:1256, 280:1292, 290:1329, 300:1366, 310:1403, 320:1439, 330:1476},
                    32:{50:453, 60:491, 70:529, 80:566, 90:604, 100:642, 110:679, 120:717755, 140:792, 150:830, 160:868905, 180:943, 190:980, 200:1018, 210:1056, 220:1093, 230:1131, 240:1169, 250:1206, 260:1244, 270:1282, 280:1319, 290:1357, 300:1395, 310:1432, 320:1470, 330:1508}};
      
      if(tlouska=="0,8")
      {
        tabulka = tabulka_08;
      }
      else if(tlouska=="1,5")
      {
        tabulka = tabulka_15;
      }
      else
      {
        tabulka = tabulka_20;
      }
      var a_z = Math.ceil(a*0.1)/0.1;
          a_z = a_z.toFixed(0);
      
      var c_z = Math.ceil(c);
          c_z = c_z.toFixed(0);
      
      if ((a_z < 50 || a_z > 330) || (c_z < 13 || c_z > 32)) {  
        msg = "Hodnoty jsou mimo rozsah ceníku.";
        if (a_z < 50 || a_z > 330) {
          msg +="\nRozměr A musí být v rozsahu 50 - 330";
        }
        if (c_z < 13 || c_z > 32){
          msg +="\nRozměr C musí být v rozsahu 13 - 32";
        }      
        alert(msg);
      } else {  
          cena.value = ks*tabulka[c_z][a_z];
        }
      
      
      //alert(a_z + ' - ' + c_z);
            
      
    } catch (e) {alert ('Došlo k chybě - '+e);}      
  }

function pridat_do_objednavky() {
    
    try {
      var seznam = document.getElementById('seznam-parapetu');
      var a = document.getElementById('rozmer_a').value;
      var b = document.getElementById('rozmer_b').value;
      var c = document.getElementById('rozmer_c').value;
      var ks = document.getElementById('pocet').value;
      var cena = document.getElementById('cena').value;
      var tlouska = document.getElementById('tlouska').value;
      
      //Vytvoříme si novej sloubec (tr)
      var objtr = document.createElement('tr'); //vytvoření nového tr      
      objtr.setAttribute('id', 'radek_'+counter); 
      
      seznam.appendChild(objtr);
      
      //Povytváříme si jednotlivé td
      
        // pořadové číslo
      /*  
      var objtd = document.createElement('td'); //vytvoření nového td  
      objtd.setAttribute('style', 'text-align:center;border-collapse: collapse;border: 1px solid #000;');   
      objtd.innerHTML = counter;
      objtr.appendChild(objtd);*/
      
        // ks
      var objtd = document.createElement('td'); //vytvoření nového td   
      objtd.setAttribute('style', 'text-align:center;border-collapse: collapse;border: 1px solid #000;');   
      objtd.innerHTML = ks;
      objtr.appendChild(objtd);
      
        // rozměr mezi ohyby (a)
      var objtd = document.createElement('td'); //vytvoření nového td
      objtd.setAttribute('style', 'text-align:center;border-collapse: collapse;border: 1px solid #000;');      
      objtd.innerHTML = a;
      objtr.appendChild(objtd);
      
        // Délka parapetu (b)
      var objtd = document.createElement('td'); //vytvoření nového td
      objtd.setAttribute('style', 'text-align:center;border-collapse: collapse;border: 1px solid #000;');      
      objtd.innerHTML = b;
      objtr.appendChild(objtd);
      
        // šířka parapetu (c)
      var objtd = document.createElement('td'); //vytvoření nového td   
      objtd.setAttribute('style', 'text-align:center;border-collapse: collapse;border: 1px solid #000;');   
      objtd.innerHTML = c;
      objtr.appendChild(objtd);
      
        // Hloubka parapetu
      var objtd = document.createElement('td'); //vytvoření nového td   
      objtd.setAttribute('style', 'text-align:center;border-collapse: collapse;border: 1px solid #000;');   
      objtd.innerHTML = parseInt(c) + 3;
      objtr.appendChild(objtd);
      
        // Zpětný ohyb
      var objtd = document.createElement('td'); //vytvoření nového td     
      objtd.setAttribute('style', 'text-align:center;border-collapse: collapse;border: 1px solid #000;'); 
      objtd.innerHTML = (parseInt(b) - parseInt(a))/2;
      objtr.appendChild(objtd);

        // Tlouska
      var objtd = document.createElement('td'); //vytvoření nového td  
      objtd.setAttribute('style', 'text-align:center;border-collapse: collapse;border: 1px solid #000;');    
      objtd.innerHTML = tlouska;
      objtr.appendChild(objtd);
            
        // Cena
      var objtd = document.createElement('td'); //vytvoření nového td  
      objtd.setAttribute('style', 'text-align:center;border-collapse: collapse;border: 1px solid #000;');    
      objtd.innerHTML = cena;
      objtr.appendChild(objtd);
      
        // smazat
      var objtd = document.createElement('td'); //vytvoření nového td  
      objtd.setAttribute('style', 'text-align:center;border-collapse: collapse;border: 1px solid #000;cursor:pointer;background:#cccccc;');    
      objtd.innerHTML = '<a onclick="document.getElementById(\'seznam-parapetu\').removeChild(document.getElementById(\'radek_'+counter+'\'))" style="cursor:pointer;">smazat</a>';
      objtd.setAttribute('class', counter);
      objtd.onClick = function () { document.getElementById('seznam-parapetu').removeChild(document.getElementById('radek_'+this.className));}
      objtr.appendChild(objtd);
      
      counter = counter +1; //navýšit počet
      
      document.getElementById('rozmer_a').value = '0';
      document.getElementById('rozmer_b').value = '0';
      document.getElementById('rozmer_c').value = '0';
      document.getElementById('pocet').value = '1';
      document.getElementById('cena').value = '0';
    } catch (e) {
        alert ('Došlo k chybě - '+e);
      }
  
  }

    function validni(input){
    try {
      var check = true;       
      var reg = /,/gi;      
      input.value = input.value.replace(reg, '.');
      var value = input.value;
      for(var i=0;i < input.value.length; ++i)
      {
        var new_key = value.charAt(i); //cycle through characters
        if(((new_key < "0") || (new_key > "9")) && 
             !(new_key == "") && !(new_key == '.'))
               {
                    check = false;
                    break;
               }
      }
      
      if (!check ) {
        alert('Zadávejte Pouze čísla.');
        input.style.cssText = "border: 1px solid red";
        document.getElementById('spocitat_btn').disabled = true;
        document.getElementById('pridat_btn').disabled = true;
      } else {
        input.style.cssText = "";    
        document.getElementById('spocitat_btn').disabled = false;
        document.getElementById('pridat_btn').disabled = false;  
      }
           
                             
      
    } catch (e) {//alert ('Došlo k chybě - '+e);
    }
  } 
  function validni_b(input){
    try {
      var check = true;       
      var reg = /,/gi;      
      input.value = input.value.replace(reg, '.');
      var value = input.value;
      for(var i=0;i < input.value.length; ++i)
      {
        var new_key = value.charAt(i); //cycle through characters
        if(((new_key < "0") || (new_key > "9")) && 
             !(new_key == "") && !(new_key == '.'))
               {
                    check = false;
                    break;
               }
      }
      
      if (!check ) {
        alert('Zadávejte Pouze čísla.');
        input.style.cssText = "border: 1px solid red";
        document.getElementById('spocitat_btn').disabled = true;
        document.getElementById('pridat_btn').disabled = true;
      } else {
        if(value>350)
        {
          alert('Maximální délka parapetu je 350cm.');
          input.style.cssText = "border: 1px solid red";
          document.getElementById('spocitat_btn').disabled = true;
          document.getElementById('pridat_btn').disabled = true;
        
        } else{
          input.style.cssText = "";    
          document.getElementById('spocitat_btn').disabled = false;
          document.getElementById('pridat_btn').disabled = false;
        }  
      }
           
                             
      
    } catch (e) {//alert ('Došlo k chybě - '+e);
    }
  } 
  
  function setbarvu(o) {
    try {
      var odstin = document.getElementById('odstin');
      odstin.innerHTML = o.value; 
    } catch (e) {}
  }
  function setbarvuvlastni(o) {
    try {
      var odstin = document.getElementById('odstin');
      if (o.value!='') {   
        var or = document.getElementsByName('barva');
        for (var i = 0; i < or.length; i++) {
           or[i].checked = false;
        }        
        odstin.innerHTML = o.value;        
      } else {
          odstin.innerHTML = '';
        }
      
    } catch (e) {}
  }
  function pisemadresu() {
    try {
      var adr = document.getElementById('adresa_cont');
      var jmeno = document.getElementById('jmeno');
      var adresa = document.getElementById('adresa');
      var mail = document.getElementById('mail');
      var tel = document.getElementById('tel');      
      var data;
      
      data = '<strong>'+jmeno.value+'</strong><br />';
      data += 'Adresa: ' +adresa.value.replace(/\n/g, '<br />')+'<br />';
      data += 'Tel.: '+tel.value+'<br />';
      data += 'E-mail: '+mail.value+'<br />';
     // alert(data);
      adr.innerHTML = data;     
      
    } catch (e) {}
    
  }
 
  function objednavkuodeslat() {
    var poslat;
poslat=true;

if((!document.forms.objednavkaParapetu.jmeno.value)||(!document.forms.objednavkaParapetu.adresa.value)||(!document.forms.objednavkaParapetu.mail.value)||(!document.forms.objednavkaParapetu.tel.value))poslat = false;
else if ((document.forms.objednavkaParapetu.mail.value.length<6)||(document.forms.objednavkaParapetu.mail.value.indexOf("@")==-1)||(document.forms.objednavkaParapetu.mail.value.indexOf(".")==-1))poslat = false;
else if ((document.forms.objednavkaParapetu.tel.value.length<9))poslat = false;
else poslat = true;	


if(poslat){
document.forms.objednavkaParapetu.submiter.value = "send";
   
    
    
    try {      
      var data = document.getElementById('objednavka');
      var input = document.getElementById('objednavka_html');      
      input.value=data.innerHTML;    
      document.forms.objednavkaParapetu.submit();
    } catch (e) {}
  
  }
else {
document.forms.objednavkaParapetu.submiter.value = "a";
alert('Nepodařilo se odeslat objednávku. Pravděpodobně jsou nedostatečně vyplněné kontaktní údaje.');
}
  }



