function convert(){
	var fieldFrom = document.converter.cfrom;
	var fieldTo = document.converter.cto;
	var fieldXX = document.converter.xx;
	var fieldYY = document.converter.yy;
	var convertTable = new Array(11);
	for(i = 0; i<convertTable.length; i++) convertTable[i] = new Array(11);
	convertTable[0][0] = 1;
	convertTable[0][1] = 1.01325;
	convertTable[0][2] = 1013250;
	convertTable[0][3] = 29.921258292;
	convertTable[0][4] = 406.782450845;
	convertTable[0][5] = 10332.27;
	convertTable[0][6] = 14.695948776;
	convertTable[0][7] = 2116.216623674;
	convertTable[0][8] = 760;
	convertTable[0][9] = 760000;
	convertTable[0][10] = 101325;

	convertTable[1][0] = 0.986923267;
	convertTable[1][1] = 1;
	convertTable[1][2] = 1000000;
	convertTable[1][3] = 29.529985978;
	convertTable[1][4] = 401.463065231;
	convertTable[1][5] = 10197;
	convertTable[1][6] = 14.503773773;
	convertTable[1][7] = 2088.543423315;
	convertTable[1][8] = 750.061682704;
	convertTable[1][9] = 750060;
	convertTable[1][10] = 100000;

	convertTable[2][0] = 0.986923266716e-6;
	convertTable[2][1] = 1.0e-6;
	convertTable[2][2] = 1;
	convertTable[2][3] = 0.0000295299860;
	convertTable[2][4] = 0.000401463065;
	convertTable[2][5] = 0.010197;
	convertTable[2][6] = 0.0000145037738;
	convertTable[2][7] = 0.00208854342;
	convertTable[2][8] = 0.000750061683;
	convertTable[2][9] = 0.75006;
	convertTable[2][10] = 0.1;

	convertTable[3][0] = 0.0334210544;
	convertTable[3][1] = 0.0338638833;
	convertTable[3][2] = 33863.883333333;
	convertTable[3][3] = 1;
	convertTable[3][4] = 13.595098404;
	convertTable[3][5] = 345.3;
	convertTable[3][6] = 0.491154103;
	convertTable[3][7] = 70.726190824;
	convertTable[3][8] = 25.400001316;
	convertTable[3][9] = 25400;
	convertTable[3][10] = 3386.388333333;

	convertTable[4][0] = 0.00245831647;
	convertTable[4][1] = 0.00249088917;
	convertTable[4][2] = 2490.889166667;
	convertTable[4][3] = 0.0735559222;
	convertTable[4][4] = 1;
	convertTable[4][5] = 25.4;
	convertTable[4][6] = 0.0361272930;
	convertTable[4][7] = 5.202330187;
	convertTable[4][8] = 1.868320520;
	convertTable[4][9] = 1868;
	convertTable[4][10] = 249.088917;

	convertTable[5][0] = 9.678e-5;
	convertTable[5][1] = 9.8067e-5;
	convertTable[5][2] = 98.067;
	convertTable[5][3] = 0.002896;
	convertTable[5][4] = 0.03937;
	convertTable[5][5] = 1;
	convertTable[5][6] = 0.001423;
	convertTable[5][7] = 0.2048;
	convertTable[5][8] = 0.073558;
	convertTable[5][9] = 73.558;
	convertTable[5][10] = 9.8067;

	convertTable[6][0] = 0.0680459639;
	convertTable[6][1] = 0.0689475729;
	convertTable[6][2] = 68947.572931684;
	convertTable[6][3] = 2.036020862;
	convertTable[6][4] = 27.679903969;
	convertTable[6][5] = 703.06;
	convertTable[6][6] = 1;
	convertTable[6][7] = 144;
	convertTable[6][8] = 51.714932572;
	convertTable[6][9] = 51715;
	convertTable[6][10] = 6894.757293168;

	convertTable[7][0] = 0.000472541416;
	convertTable[7][1] = 0.000478802590;
	convertTable[7][2] = 478.802589803;
	convertTable[7][3] = 0.0141390338;
	convertTable[7][4] = 0.192221555;
	convertTable[7][5] = 4.882;
	convertTable[7][6] = 0.00694444444;
	convertTable[7][7] = 1;
	convertTable[7][8] = 0.359131476;
	convertTable[7][9] = 359.1;
	convertTable[7][10] = 47.880258980;

	convertTable[8][0] = 0.00131578947;
	convertTable[8][1] = 0.00133322368;
	convertTable[8][2] = 1333.223684211;
	convertTable[8][3] = 0.0393700767;
	convertTable[8][4] = 0.535240067;
	convertTable[8][5] = 13.59;
	convertTable[8][6] = 0.0193367747;
	convertTable[8][7] = 2.784495557;
	convertTable[8][8] = 1;
	convertTable[8][9] = 1000;
	convertTable[8][10] = 133.322368421;

	convertTable[9][0] = 1.316e-6;
	convertTable[9][1] = 1.333e-6;
	convertTable[9][2] = 1.333;
	convertTable[9][3] = 3.937e-5;
	convertTable[9][4] = 5.354e-4;
	convertTable[9][5] = 0.01359;
	convertTable[9][6] = 1.934e-5;
	convertTable[9][7] = 0.0027844;
	convertTable[9][8] = 0.001;
	convertTable[9][9] = 1;
	convertTable[9][10] = 0.1333;

	convertTable[10][0] = 0.986923266716e-5;
	convertTable[10][1] = 0.00001;
	convertTable[10][2] = 10;
	convertTable[10][3] = 0.000295299860;
	convertTable[10][4] = 0.00401463065;
	convertTable[10][5] = 0.1019;
	convertTable[10][6] = 0.000145037738;
	convertTable[10][7] = 0.0208854342;
	convertTable[10][8] = 0.00750061683;
	convertTable[10][9] = 7.502;
	convertTable[10][10] = 1;
	fieldYY.value = fieldXX.value * convertTable[fieldFrom.selectedIndex][fieldTo.selectedIndex];
}