function obl_calc()
{
	var obl_from = document.getElementById("obl_from").value;
	var obl_to = document.getElementById("obl_to").value;
	var calc=new Array();
	
		calc[1] = [0,0,571,812,126,637,373,266,317,972,387,369,466,429,576,313,801,611,239,593,720,533,122,340,312,423];
		calc[2] = [0,571 ,0,250,630,89,952,479,246,401,888,948,329,463,183,814,458,366,818,1172,222,316,701,326,891,585];
		calc[3] = [0,812 ,250,0,880,243,1202,729,496,151,1138,1198,579,713,391,1064,571,488,1068,1422,283,535,951,576,1141,826];
		calc[4] = [0,126 ,630,880,0,719,459,140,434,987,261,407,592,555,494,187,927,485,325,679,638,659,208,352,398,297];
		calc[5] = [0,637 ,89,243,719,0,1018,568,314,394,977,1014,352,486,277,903,371,460,884,1238,303,292,767,415,957,674];
		calc[6] = [0,373 ,952,1202,459,1018,0,599,698,1353,273,135,785,658,953,292,1124,944,137,301,1097,856,251,721,143,756];
		calc[7] = [0,266 ,479,729,140,568,599,0,299,836,398,544,517,480,343,324,852,339,465,819,487,584,348,201,538,151];
		calc[8] = [0,317 ,246,496,434,314,698,299,0,647,692,694,180,337,251,618,524,434,564,918,395,251,447,126,637,436];
		calc[9] = [0,972 ,401,151,987,394,1353,836,647,0,1245,1349,730,864,493,1171,722,535,1219,1573,303,686,1102,727,1292,873];
		calc[10] = [0,387 ,888,1138,261,977,273,398,692,1245,0,152,853,816,752,70,1188,743,164,432,896,920,268,610,336,555];
		calc[11] = [0,369 ,948,1198,407,1014,135,544,694,1349,152,0,843,743,898,215,1178,889,127,278,1042,910,247,717,278,701];
		calc[12] = [0,466 ,329,579,592,352,785,517,180,730,853,843,0,134,488,779,339,671,713,1067,551,71,596,368,642,671];
		calc[13] = [0,429 ,463,713,555,486,658,480,337,864,816,743,134,0,596,742,473,779,676,959,685,205,559,453,515,634];
		calc[14] = [0,576 ,183,391,494,277,953,343,251,493,752,898,488,596,0,678,631,185,819,1173,144,499,702,271,892,412];
		calc[15] = [0,313 ,814,1064,187,903,292,324,618,1171,70,215,779,742,678,0,1114,669,158,495,823,846,195,536,331,481];
		calc[16] = [0,801 ,458,571,927,371,1124,852,524,722,1188,1178,339,473,631,1114,0,814,1048,1402,657,279,931,649,981,959];
		calc[17] = [0,611 ,366,488,485,460,944,339,434,535,743,889,671,779,183,669,814,0,810,1164,185,682,693,343,883,338];
		calc[18] = [0,239 ,818,1068,325,884,137,465,564,1219,163,127,713,676,819,158,1048,810,0,353,963,780,117,587,176,622];
		calc[19] = [0,593 ,1172,1422,679,1238,301,819,918,1573,432,278,1067,959,1173,495,1402,1164,353,0,1317,1134,417,941,444,976];
		calc[20] = [0,720 ,222,283,638,303,1097,487,395,303,896,1042,551,685,144,823,657,185,963,1317,0,538,846,415,1036,523];
		calc[21] = [0,533 ,316,535,659,292,856,584,251,686,920,910,71,205,499,846,279,682,780,1134,538,0,663,411,713,738];
		calc[22] = [0,122 ,701,951,208,767,251,348,447,1102,268,247,596,559,702,192,931,693,117,471,846,663,0,470,190,505];
		calc[23] = [0,340 ,326,576,352,415,721,201,126,727,610,717,368,453,271,536,649,343,587,941,415,411,470,0,660,311];
		calc[24] = [0,312 ,891,1141,398,957,143,538,637,1292,336,278,642,515,892,331,981,883,176,444,1036,713,190,660,0,695];
		calc[25] = [0,423 ,585,826,297,674,756,151,436,873,555,701,671,634,412,481,959,338,622,976,523,738,505,311,695,0];
		
	if (obl_from != 0 && obl_to != 0)
	{
		//alert(calc[obl_from][obl_to]);
		document.getElementById('obl_result').innerHTML = calc[obl_from][obl_to]+'км.';
	}
}


function tar_calc()
{
	
}